Clamping assembly and cloth clamping cleaning tool

Abstract

The utility model provides a clamping assembly which comprises a clamping seat and a first clamping piece which are movably matched, the clamping seat is provided with first clamping teeth, the first clamping piece is provided with second clamping teeth, a clamping cavity is formed between the first clamping teeth and the second clamping teeth, and the first clamping teeth and the second clamping teeth are arranged in the clamping cavity. The first clamping teeth and / or the second clamping teeth are provided with barb teeth, the barb teeth extend into the clamping cavity, the first clamping teeth and the second clamping teeth clamp and fix an object to be clamped, and at least part of the object to be clamped enters the clamping cavity and is clamped and fixed by the barb teeth. A cloth clamping cleaning tool comprises a handle and a clamping assembly, and the clamping assembly is used for clamping a wiping object. The clamping device has the advantages that the to-be-clamped object is further fixed through the barb teeth and the clamping cavity, and the downward moving resistance of the to-be-clamped object is increased through the barb teeth extending upwards, so that the installation stability of the to-be-clamped object is improved.

Description

Technical Field

[0001] The utility model relates to the field of daily cleaning tools, in particular to a clamping component and a cloth-clamping cleaning tool. Background Art

[0002] Cleaning tools are widely used in people's daily life, such as mops, window wipers, etc. The cleaning tool has the advantage of replaceable wiping materials.

[0003] For example, Chinese patent CN201310227871.2 relates to a dust mop with a mounting mechanism on the mop deck for mounting a dust cloth or dust paper. The mounting mechanism includes a hollow clamping device with a plurality of clamping grooves on its surface. The four corners of the dust cloth or dust paper are inserted into the clamping grooves for clamping. However, this mop requires manual contact with the dust cloth when installing and removing it.

[0004] Another example is Chinese patent CN202221557784.4, which relates to a flat mop with automatic mop cloth change. This flat mop uses a handle to drive a gear to rotate and control the movement of a drive plate. The drive plate and connecting plate automatically clamp the mop cloth during the retraction process, and the mop cloth automatically detaches from the mop plate during the expansion process, eliminating the need to touch the mop cloth when changing the mop cloth. However, this flat mop does not hold the mop cloth firmly, making it easy for the mop to fall off during mopping.

[0005] Therefore, the installation and disassembly structure of the wiper needs to be further optimized. Utility Model Content

[0006] One purpose of the utility model is to provide a clamping assembly and a cloth-clamping cleaning tool to solve the above-mentioned problem.

[0007] In order to achieve the above-mentioned purpose of the utility model, the utility model is implemented through the following technical solutions:

[0008] A clamping assembly includes a movably fitted clamping seat and a first clamping member, the clamping seat is provided with a first clamping tooth, the first clamping member is provided with a second clamping tooth, the second clamping tooth is located below the first clamping tooth, a clamping cavity is provided between the first clamping tooth and the second clamping tooth, the first clamping tooth and / or the second clamping tooth are provided with a barb tooth, the barb tooth extends into the clamping cavity, the first clamping member moves from an open position to a clamping position, driving the object to be clamped close to the first clamping tooth until it is clamped and fixed by the first clamping tooth and the second clamping tooth, and at least part of the object to be clamped enters the clamping cavity and is clamped and fixed by the barb teeth. The existing clamping assemblies generally use two sets of clamping teeth with poor fit to directly clamp on both sides of the object to be clamped to achieve fixation. The teeth reduce the contact area between the teeth and the object to be clamped and increase the pressure to make the clamping more stable. However, the object to be clamped is still easy to fall off during actual use. The utility model is based on the two sets of clamping teeth, and the two sets of clamping teeth are set to be offset up and down, and a set of barb teeth is added. Generally, the object to be clamped is fixed at the bottom of the clamping assembly. The falling off of the object to be clamped is usually due to the loosening or movement of the first clamping piece, and the object to be clamped moves downward from the clamping assembly. The barb teeth are set on the second clamping teeth located below or barb teeth are set on both sets of clamping teeth. The barb teeth and the clamping cavity are used to further fix the object to be clamped, and the resistance to the downward movement of the object to be clamped is increased by the upward extending barb teeth, so as to improve the installation stability of the object to be clamped.

[0009] Preferably, the clamping seat is provided with a first clamping portion below the first clamping tooth, and the first clamping member is provided with a second clamping portion above the second clamping tooth. The first clamping tooth, the second clamping tooth, the first clamping portion, and the second clamping portion enclose the clamping cavity, and the object to be clamped is simultaneously clamped and fixed between the first clamping tooth and the second clamping portion, between the barbed tooth and the clamping cavity, and between the second clamping tooth and the first clamping portion. Compared with existing clamping structures, the clamping position and direction are increased, and the object to be clamped can be clamped in three positions, vertically, and horizontally simultaneously, thereby improving clamping stability and preventing it from falling off.

[0010] Preferably, the end of the clamping seat is provided with a first laterally extending boss, the first boss is provided with a third clamping tooth, the third clamping tooth and the first clamping tooth cooperate with the second clamping portion to clamp the object to be clamped, and the distance between the third clamping tooth and the second clamping portion is smaller than the distance between the first clamping tooth and the second clamping portion. In the present invention, the clamping seat and the first clamping member are movably connected in the middle position, and the end support of the clamping assembly is insufficient. The provision of the first boss and the third clamping tooth achieves end clamping stability by reducing the distance between the third clamping tooth and the second clamping portion at the end.

[0011] Preferably, the clamping seat further comprises a second, vertically extending boss below the first boss, with transversely arranged fourth clamping teeth disposed on the second boss. A third boss is disposed at the end of the first clamping member, the height of the third boss matching that of the second boss. The second clamping teeth on the third boss extend along the height of the third boss and interlock with the fourth clamping teeth for clamping. The addition of the fourth clamping teeth, in conjunction with the second clamping teeth, further enhances the clamping stability of the end of the clamping assembly, preventing the end of the clamped object from falling.

[0012] Preferably, the bottom of the first clamping portion is provided with vertically extending auxiliary teeth, which extend from the bottom of the clamping seat to conform to the object to be clamped. The clamped object is generally flush with the bottom surface of the clamping assembly when in use. For example, if the object to be clamped is a wipe, the wipe is supported by the bottom surface of the clamping assembly during cleaning. Friction and other resistance between the wipe and the ground are converted into a pulling force that pulls the wipe away from the clamping teeth. The provision of the auxiliary teeth increases the resistance between the bottom surface of the clamping assembly and the wipe, thereby improving the movement of the wipe relative to the bottom surface of the clamping assembly during cleaning, thereby preventing the wipe from separating from the clamping teeth.

[0013] A cloth-clamping cleaning tool comprises a handle and a clamping assembly as described above, wherein the clamping seat is provided with a hinge seat movably connected to the handle, the first clamping piece is movably mounted on one side of the clamping seat, and the clamping seat is further provided with a movable second clamping piece on the other side relative to the first clamping piece, the first clamping piece is connected to a first connecting rod, the second clamping piece is connected to a second connecting rod, the first connecting rod and the second connecting rod are both rotatably mounted on the hinged seat, the hinged seat can move up and down relative to the clamping seat, and the clamping seat and the hinged seat are movable. At least one guide rod is provided between the joints, and the guide rod prevents the hinged seat from rotating relative to the first connecting rod or the second connecting rod. When the wiper is installed, the first clamping member and the second clamping member are in the expanded state. By pressing the handle or the hinged seat, the guide rod guides the hinged seat to move downward in the vertical direction and synchronously drives the first connecting rod and the second connecting rod to move, so that the first clamping member and the second clamping member move toward each other to clamp the wiper. A switch assembly is also provided on the clamping seat, and the switch assembly positions the first clamping member and the second clamping member in the clamping state. By pressing the handle or the articulated seat, the first connecting rod and the second connecting rod are driven to move downward and rotate to drive the first clamping member and the second clamping member to move toward each other to clamp the wiping object. There is no need to directly touch the wiping object with hands when installing and removing the wiping object, which is more hygienic and provides a better experience. Since the articulated seat and the clamping seat are indirectly connected through the first connecting rod and the second connecting rod, when the handle or the articulated seat is pressed, the articulated seat deflects to both sides to change the direction of the force, and the first connecting rod and the second connecting rod cannot move downward. The setting of the guide rod limits the force application direction and movement direction of the articulated seat, making the linkage between the various components of the cloth clamping cleaning tool more stable.

[0014] Preferably, the first clamping member includes a first sliding section and a first clamping section, the lower end of the first connecting rod is rotatably connected to the first sliding section along a second axis, the second clamping member includes a second sliding section and a second clamping section, the lower end of the second connecting rod is rotatably connected to the second sliding section along a third axis, when the first clamping member and the first connecting rod are moving, the distance between the first axis and the first clamping section is always greater than the distance between the first axis and the second clamping section, when the second clamping member and the second connecting rod are moving, the distance between the second axis and the second clamping section is always greater than the distance between the second axis and the first clamping section. The space inside the clamping seat is small, and the first connecting rod, the second connecting rod, the first sliding end and the second sliding section require a certain range of motion. The cross-mounting and movable method between the first sliding end and the second sliding section can shorten the range of motion of each component, that is, there are overlapping sections in the range of motion of each component, which facilitates linkage in the narrow space of the clamping seat.

[0015] Preferably, the first clamping member and the second clamping member are stacked up and down and connected, the first connecting rod and the second connecting rod are both rotatably connected to the hinge seat along the first axis, the first clamping member and the second clamping member move from the expanded state to the clamped state, the first axis reduces the height difference with the second axis or the third axis, and when the first clamping member and the second clamping member are in the clamped state, the first axis is located above the second axis or the third axis, so that the first connecting rod and the second connecting rod maintain a pre-expanded state. When the rotation axes of the hinge seat and the first link and the second link are different, if the handle is not perpendicular to the clamping seat or pressed on the eccentric position of the clamping seat, the force on one side of the hinge seat is greater, the force on the first link and the second link is uneven, the synchronization between the first link, the second link, the first clamping member and the second clamping member is poor, and it is easy for one clamping member to move while the other clamping member does not move. The first link and the second link are coaxially rotated, so that the synchronization of the first link and the second link is better, and they always keep the state of being active or stationary at the same time; the first clamping member and the second clamping member are stacked up and down, so that The moving paths of the two have overlapping parts, so as to shorten the length required for the movement of the two, and facilitate linkage in the narrow space of the clamping seat; if the first axis, the second axis and the third axis are located at the same height, when the clamping member is pulled, the forces between the clamping member and the connecting rod, and between the connecting rod and the hinge seat are on the same plane, and the hinge seat and the connecting rod are not subjected to upward force, and it is difficult for the two to move upward or rotate. The pre-expansion setting of the first connecting rod and the second connecting rod can transmit force upward when the cloth clamping cleaning tool switches from the clamping state to the expanded state, so that the movement of the various components of the cloth clamping cleaning tool is smoother.

[0016] Preferably, the first sliding section and the second sliding section are stacked up and down, and an elastic member is connected between the first sliding section and the second sliding section. The elastic force of the elastic member can drive the first clamping member and the second clamping member to move synchronously in opposite directions to the expanded state, or by pressing any one of the first clamping member and the second clamping member, the elastic member can pull the other clamping member, so that the first clamping member and the second clamping member can move synchronously toward each other to the clamped state. The two clamping members are automatically deployed by the elastic member. Compared with setting the elastic member separately, setting the elastic member between the two clamping members can achieve better synchronization between the two clamping members. Even if one of the connecting rods or clamping members is stuck, the activity of the other connecting rod or clamping member can be transmitted to the connecting rod or clamping member through the elastic member to drive its activity, and the activity state between the two clamping members always remains synchronized.

[0017] Preferably, the first clamping member is further provided with a third sliding section, and the second clamping member is further provided with a fourth sliding section. Both sides of the first connecting rod are rotatably connected to the first sliding section and the third sliding section respectively, so that a connecting ring is formed between the first clamping member and the first connecting rod, and both sides of the second connecting rod are rotatably connected to the second sliding section and the fourth sliding section respectively, so that a connecting ring is formed between the second clamping member and the second connecting rod. During installation, the first sliding section is affixed to the top of the second sliding section, and the third sliding section is affixed to the bottom of the fourth sliding section, connecting the first clamping member, the second clamping member, the first connecting rod, the second connecting rod and the elastic member into an integral clamping module. The rotationally symmetrical installation structure of the first clamping member and the second clamping member does not require deliberate distinction between the first clamping member and the second clamping member during production and assembly. That is, after the two first clamping members are installed with each other, the first clamping member and the second clamping member are formed by their relative positions, thereby avoiding the situation where two different clamping members are taken or installed incorrectly, and the assembly efficiency is higher; the first clamping member, the second clamping member, the first connecting rod, and the second connecting rod are cross-connected in the form of two connecting rings, so that the two groups of components form an O-shaped chain, which has a simple structure and can be stably connected even without the assistance of screws or snap-on structures. The components are first installed as an integral module and then installed on the clamping seat, which is convenient for division of labor and assembly on the assembly line and can improve the assembly efficiency of workers.

[0018] Preferably, the first sliding section is provided with a first slide, and the end of the first slide away from the first clamping section is provided with a first sinker and a first hook, the second sliding section is provided with a second slide, and the end of the second slide away from the second clamping section is provided with a second hook, the first sinker is inserted into the second slide and can move along the second slide, the two ends of the elastic member are respectively installed on the first hook and the second hook, the two ends of the elastic member are at the same height, and the direction of the elastic force released by the elastic member is parallel to or on the same straight line with the moving direction of the first sliding section and the second sliding section.

[0019] Preferably, the fourth sliding section is provided with a third slide, and the end of the third slide away from the second clamping section is provided with a second sinker and a third hook, the third sliding section is provided with a fourth slide, and the end of the fourth slide away from the first clamping section is provided with a fourth hook, the second sinker is inserted into the fourth slide and can move along the fourth slide, the two ends of the elastic member are respectively mounted on the third hook and the fourth hook, the two ends of the elastic member are located at the same height, and the direction of the elastic force released by the elastic member is parallel to or on the same straight line with the moving direction of the third sliding section and the fourth sliding section. The direction of the elastic force of the elastic member is parallel to or on the same straight line with the moving direction of each sliding section, so that the force transmission effect is better and the movement of each sliding section is smoother, avoiding the situation where the tilted elastic force of the spring causes the upper and lower sliding sections to fit tighter and increase friction. At the same time, a guide track is formed between the sinker and the slide, and each sliding section can move along a preset direction.

[0020] The advantages of the present invention are:

[0021] On the basis of two groups of clamping teeth, the two groups of clamping teeth are set to be staggered up and down, and an additional group of barb teeth is provided. Generally, the object to be clamped is fixed at the bottom of the clamping assembly. The falling off of the object to be clamped is usually due to the loosening or movement of the first clamping member, and the object to be clamped moves downward away from the clamping assembly. The barb teeth are provided on the second clamping teeth located below or barb teeth are provided on both groups of clamping teeth. The barb teeth and the clamping cavity are used to further fix the object to be clamped, and the upward extending barb teeth increase the resistance to the downward movement of the object to be clamped, so as to improve the installation stability of the object to be clamped.

[0022] By pressing the handle or the hinged seat, the first connecting rod and the second connecting rod are driven to move downward and rotate to drive the first clamping member and the second clamping member to move toward each other to clamp the wiper. When installing and removing the wiper, there is no need to directly touch the wiper with hands, which is more hygienic and provides a better experience.

[0023] The first connecting rod and the second connecting rod are arranged to rotate coaxially, so that the first connecting rod and the second connecting rod are better synchronized and always maintain a state of simultaneous movement or stillness; the first clamping member and the second clamping member are stacked and connected up and down so that the movement paths of the two have overlapping parts, thereby shortening the length required for the movement of the two, and facilitating linkage in the narrow space of the clamping seat.

[0024] Since the articulated seat and the clamping seat are indirectly connected through the first connecting rod and the second connecting rod, when the handle or the articulated seat is pressed, the articulated seat deflects to both sides to change the direction of the force, and the first connecting rod and the second connecting rod cannot move downward. The setting of the guide rod limits the force application direction and movement direction of the articulated seat, making the linkage between the various components of the cloth clamping cleaning tool more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a cross-sectional view and a partially enlarged schematic view of the clamping assembly of the utility model.

[0026] Figure 2 It is a schematic diagram of the clamping state of the clamping structure in the prior art.

[0027] Figure 3 It is a schematic diagram of the clamping state of the clamping assembly of the utility model.

[0028] Figure 4 It is an exploded view and a partially enlarged schematic diagram of the clamping assembly of the utility model.

[0029] Figure 5 It is an overall schematic diagram of the cloth-clamped cleaning tool of the present invention.

[0030] Figure 6 It is an exploded schematic diagram of the cloth-clamped cleaning tool of the present invention.

[0031] Figure 7 It is an exploded schematic diagram of the clamping module of the utility model.

[0032] Figure 8 It is a schematic diagram of the rotation axis of the clamping module of the present invention.

[0033] Figure 9 It is a cross-sectional schematic diagram of the clamping seat of the utility model in a clamping state.

[0034] Figure 10 It is a cross-sectional schematic diagram of the clamping seat of the utility model in an expanded state.

[0035] Figure 11 It is a schematic diagram of the installation state of the first clamping member and the upper cover of the utility model.

[0036] Figure 12 It is a cross-sectional schematic diagram of the utility model in the limited state of the coupling between the hook and the clamping seat.

[0037] Figure 13 It is a cross-sectional schematic diagram of the utility model in the unlocked state of the hook and the clamping seat.

[0038] Figure 14 It is a schematic diagram of the clamping seat of the utility model moving from a clamping state to an expanded state. DETAILED DESCRIPTION

[0039] The following describes the implementation methods of the present invention in detail with reference to the accompanying drawings, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0040] Certain terms are used in this utility model to refer to specific components. Those skilled in the art will understand that this specification and claims do not distinguish components based on differences in name, but rather on differences in their functions. It should be noted that, unless otherwise specified, when a component is described as being "provided with," "provided on," or "provided on" another component, it can mean being directly provided with or provided on the other component, or there can be a central component, and it can be an integral or split structure. When a component is described as being "connected to" another component, it can mean being directly connected or connected through a central component, and it can be an integral or split connection, or there can be a contact fit. When a component is described as being "provided on another component," it does not necessarily mean that the component is located above or on top of the other component; other locations are possible. The terms "upper," "lower," "left," "right," "high," "lower," and similar expressions used herein refer to the product in its normal position and are for ease of description only. The term "plurality" used herein refers to two or more. The terms "vertical", "horizontal" and the like as used herein refer to a state that is approximately vertical or approximately horizontal within a reasonable error range and do not necessarily require to be very precise. Example 1

[0041] like Figure 1-4 A clamping assembly 1 includes a movably fitted clamping seat 2 and a first clamping member 3, the clamping seat 2 is provided with a first clamping tooth 4, the first clamping member 3 is provided with a second clamping tooth 5, the second clamping tooth 5 is located below the first clamping tooth 4, a clamping cavity 6 is provided between the first clamping tooth 4 and the second clamping tooth 5, the first clamping tooth 4 and / or the second clamping tooth 5 are provided with a barb tooth 7, the barb tooth 7 extends into the clamping cavity 6, the first clamping member 3 moves from the open position to the clamping position, driving the object to be clamped to approach the first clamping tooth 4 until it is clamped and fixed by the first clamping tooth 4 and the second clamping tooth 5, and at least part of the object to be clamped enters the clamping cavity 6 and is clamped and fixed by the barb tooth 7.

[0042] In this embodiment, the clamping seat 2 is set to be square, and the bottom is roughly flat. The middle part of the first clamping member 3 is movably connected to the clamping seat 2 and can move closer to or away from one of the side edges of the clamping seat 2 to achieve clamping and expansion. The up and down directions, vertical directions, lateral directions and horizontal directions in this embodiment can be referred to Figure 1 direction shown.

[0043] The item to be clamped in this embodiment can be a non-woven fabric, wet wipes, paper towels, rags, mops and other soft sheet-like wiping materials. The item to be clamped can also be a brush-like item such as a steel wool and a scouring pad. The clamping component 1 forms different cleaners by clamping different items. The present invention does not specifically limit the type of item to be clamped. It only needs to be clamped by the clamping component 1. The item to be clamped in the present invention is specifically described as a wipe 10, and the item to be clamped is referred to as a wipe 10 hereafter.

[0044] The clamping seat 2 is provided with a first clamping portion 8 below the first clamping tooth 4, and the first clamping member 3 is provided with a second clamping portion 9 above the second clamping tooth 5. The first clamping tooth 4, the second clamping tooth 5, the first clamping portion 8 and the second clamping portion 9 form a clamping cavity 6, and the first clamping tooth 4 and the second clamping portion 9, the barb tooth 7 and the clamping cavity 6, and the second clamping tooth 5 and the first clamping portion 8 clamp and fix the object to be clamped at the same time.

[0045] The existing clamping structure generally clamps the two opposite sides of the same position of the wipe 10, such as Figure 2 , the two sets of clamping teeth drive the wiper 10 to partially arch upward and clamp it at the arched position. Under this clamping structure, due to the assembly gap between the components and the influence of product deformation, when the wiper 10 is pulled by hand or mopped, it is easy to cause the two sets of clamping teeth to slightly open and cause the wiper 10 to fall when subjected to horizontal or downward force; Figure 3 In this embodiment, a barbed tooth 7 is additionally provided between the first clamping tooth 4 and the second clamping tooth 5. When fixed, the first clamping member 3 moves to drive a part of the wiping object 10 to arch upward, and the second clamping tooth 5 clamps the lower end of the arched position. The upper end of the arch is blocked by the first clamping portion 8 and the first clamping tooth 4 and enters the clamping cavity 6, so that the wiping object 10 arches to form multiple broken lines when clamped. The first clamping tooth 4 and the second clamping tooth 5 clamp the wiping object 10 in the horizontal direction, and the barbed tooth 7 is between the first clamping tooth 4 and the second clamping tooth The middle of the holding teeth 5 clamps the wiper 10 in the up and down directions. When the wiper 10 is pulled by an external force, the first clamping teeth 4, the second clamping teeth 5 and the barb teeth 7 will penetrate into the wiper 10. Even if the gap of the second clamping teeth 5 at the lower end increases and becomes loose, the wiper 10 needs to move downward when leaving the clamping assembly 1. Under the action of the vertically arranged barb teeth 7, the greater the downward pulling force on the wiper 10, the greater the pressure or elastic force between the wiper 10 and the barb teeth 7, and it is more difficult for the wiper 10 to be pulled off the clamping assembly 1.

[0046] Preferably, the barb teeth 7 are extended upward.

[0047] Since the first clamping member 3 and the clamping seat 2 in this embodiment are only connected in the middle position, the end settings of the first clamping member 3 and the clamping seat 2 lack support, which cannot prevent the wiper 10 at the end from loosening and falling. In this embodiment, a first boss 11 extending laterally is provided at the end of the clamping seat 2, and a third clamping tooth 12 is provided on the first boss 11. The third clamping tooth 12 and the first clamping tooth 4 cooperate with the second clamping part 9 to clamp the wiper 10, and the distance between the third clamping tooth 12 and the second clamping part 9 is smaller than the distance between the first clamping tooth 4 and the second clamping part 9. When the clamping teeth in the middle position clamp the wiper 10, the distance between the third clamping teeth 12 and the second clamping part 9 at the end is smaller, and the clamping between the wiper 10 is tighter. The first clamping member 3 in this embodiment is configured as a strip and is made of plastic. Even if deformation occurs during clamping, the third clamping tooth 12 can still clamp stably.

[0048] like Figure 4 The clamping seat 2 is also provided with a second boss 13 extending vertically below the first boss 11, and the second boss 13 is provided with fourth clamping teeth 14 arranged horizontally. The end of the first clamping member 3 is provided with a third boss 15, and the height of the third boss 15 is adapted to the second boss 13. The second clamping teeth 5 on the third boss 15 extend along the height of the third boss 15 and are staggered and clamped with the fourth clamping teeth 14.

[0049] Preferably, the bottom of the first clamping portion 8 is provided with auxiliary teeth 16 extending up and down, and the auxiliary teeth 16 extend from the bottom of the clamping seat 2 to fit the object to be clamped. Example 2

[0050] like Figure 5-14 A cloth clamping cleaning tool includes a handle 20 and a clamping assembly 1. A hinged seat 21, a first clamping member 3 and a second clamping member 22 are provided on the clamping seat 2. The first clamping member 3 and the second clamping member 22 are movably mounted on opposite sides of the clamping seat 2. The first clamping member 3 is connected to a first connecting rod 23, and the second clamping member 22 is connected to a second connecting rod 24. The first connecting rod 23 and the second connecting rod 24 are both rotatably mounted on the hinged seat 21. The hinged seat 21 can move up and down relative to the clamping seat 2. At least one guide rod 25 is provided between the seat 2 and the hinged seat 21. The guide rod 25 prevents the hinged seat 21 from rotating relative to the first connecting rod 23 or the second connecting rod 24. When the wiper 10 is installed, the first clamping member 3 and the second clamping member 22 are in the expanded state. By pressing the handle 20 or the hinged seat 21, the guide rod 25 guides the hinged seat 21 to move downward in the vertical direction and simultaneously drives the first connecting rod 23 and the second connecting rod 24 to move, so that the first clamping member 3 and the second clamping member 22 move toward each other to clamp the wiper 10.

[0051] like Figure 5 and 6In this embodiment, the clamping seat 2 is rectangular and includes an upper cover 26 and a lower cover 27 , a cavity is formed between the upper cover 26 and the lower cover 27 , and the first clamping member 3 and the second clamping member 22 are formed. The first connecting rod 23 and the second connecting rod 24 are installed in the cavity, and the first clamping member 3 and the second clamping member 22 are installed in the long side direction of the clamping seat 2 to fix the wiper 10 on the long side of the clamping seat 2. The hinged seat 21 is indirectly installed at the center position of the clamping seat 2 through the first connecting rod 23 and the second connecting rod 24. The lower end of the handle 20 is movably installed at the center position of the hinged seat 21 through the hinge 28. There are two guide rods 25, which are respectively arranged on both sides of the clamping seat 2 relative to the handle 20. When the handle 20 is pressed to install the wiper 10, the two guide rods 25 can jointly limit and prevent the hinged seat 21 from deflecting relative to the first connecting rod 23 and the second connecting rod 24. In other embodiments, only one guide rod 25 can be provided at the center of the hinged seat 21, or four can be provided on the corners of the hinged seat 21, or other numbers can be provided, so that each guide rod 25 can achieve a stable support and limiting guiding function between the hinged seat 21 and the clamping seat 2.

[0052] It should be noted that relative movement in the present invention refers to the active movement of one object relative to another object, where the other object is the reference object and is assumed to be stationary. For example, the hinge seat 21 in this embodiment can move up and down relative to the clamping seat 2, which means that the hinge seat 21 actively moves up and down relative to the clamping seat 2, and the clamping seat 2 is stationary during this movement. For another example, the guide rod 25 prevents the hinge seat 21 from rotating relative to the first connecting rod 23 or the second connecting rod 24. The guide rod 25 restricts the hinge seat 21 from actively rotating relative to the first connecting rod 23 or the second connecting rod 24. The first connecting rod 23 or the second connecting rod 24 remains stationary, and the hinge seat 21 is also stationary or slightly oscillates due to the assembly gap between the hinge seat 21 and the guide rod 25. Conversely, when the hinge seat 21 remains stationary, the first connecting rod 23 and the second connecting rod 24 can actively rotate relative to the hinge seat 21.

[0053] In this embodiment, the first clamping member 3 and the second clamping member 22 have the same structure, and only have different installation directions.

[0054] The first connecting rod 23 and the hinge seat 21 rotate along the first axis A, and the second connecting rod 24 and the hinge seat 21 also rotate along the first axis A. The first connecting rod 23 and the second connecting rod 24 can be rotatably connected to the hinge seat 21 at the same position, or can be rotatably connected to the hinge seat 21 at different positions along the first axis A. In this embodiment, the first axis A is set on the vertical plane where the midline of the length direction of the clamping seat 2 is located. The first connecting rod 23 and the second connecting rod 24 are both rotatably set along the first axis A. When the handle 20 or the hinge seat 21 is pressed, The forces acting on the first connecting rod 23 and the second connecting rod 24 are closer, and the movement synchronization of the first connecting rod 23 and the second connecting rod 24 is better. If the first connecting rod 23 and the second connecting rod 24 are arranged in a symmetrical manner with the center line of the clamping seat 2, when the handle 20 and the clamping seat 2 are tilted, when the handle 20 is pressed or when the eccentric position of the hinge seat 21 is pressed, one of the first connecting rod 23 and the second connecting rod 24 is subjected to a larger force and the other side is subjected to a smaller force, the movement synchronization of the two connecting rods is poor, and the hinge seat 21 may even tilt toward the side with greater force and get stuck.

[0055] In this embodiment, the connection points of the first connecting rod 23, the second connecting rod 24 and the articulated seat 21 are located directly below the connection point of the handle 20 and the articulated seat 21, or the connection points of the first connecting rod 23, the second connecting rod 24 and the articulated seat 21 and the connection points of the handle 20 and the articulated seat 21 have overlapping areas in horizontal projection. When the handle 20 is pressed, the force is directly transmitted to the articulated seat 21 and the two connecting rods along the same straight line, the force directions of the two connecting rods are more consistent, and the linkage effect is better.

[0056] Preferably, the size of the hinge seat 21 is smaller than that of the upper cover 26 , and the hinge seat 21 covers the middle position of the upper cover 26 .

[0057] The first connecting rod 23 can be a single connecting rod, whose two ends are connected to the hinge seat 21 and the first clamping member 3, or it can be a connecting rod assembly, that is, the first connecting rod 23 includes two or more movably connected connecting rods, and the two connecting rods located at the ends are respectively connected to the hinge seat 21 and the first clamping member 3. The second connecting rod 24 can also adopt the above-mentioned method. In this embodiment, the first connecting rod 23 and the second connecting rod 24 are both set to be a single connecting rod.

[0058] In the above embodiment, openings are provided on both long sides of the clamping seat 2, and the first clamping member 3 and the second clamping member 22 can respectively move telescopically inward and outward along the opening. The first clamping member 3 includes a first sliding section 29 and a first clamping section 30, and the first sliding section 29 is perpendicular to the first clamping section 30. The lower end of the first connecting rod 23 is provided with a second rotating shaft 31 rotatably connected to the first sliding section 29, and the second rotating shaft 31 extends along the second axis B. The second clamping member 22 includes a second sliding section 32 and a second clamping section 33, and the second sliding section 32 is perpendicular to the second clamping section 33. The lower end of the second connecting rod 24 is provided with a third rotating shaft 34 rotatably connected to the second sliding section 32, and the third rotating shaft 34 extends along the third axis C. Figure 8 , the first axis A, the second axis B and the third axis C are all distributed in parallel, and the second axis B and the third axis C are located at symmetrical positions on both sides of the first axis A. The first sliding section 29 and the second sliding section 32 are arranged to overlap crosswise. When the first clamping member 3 and the first connecting rod 23 move, the distance between the first axis A and the first clamping section 30 is always greater than the distance between the first axis A and the second clamping section 33. When the second clamping member 22 and the second connecting rod 24 move, the distance between the second axis B and the second clamping section 33 is always greater than the distance between the second axis B and the first clamping section 30. The width of the clamping seat 2 is narrow and the movable path is limited. The first connecting rod 23, the second connecting rod 24, the first sliding end and the second sliding section 32 require a certain movable stroke. The cross-installation movable method is adopted between the first connecting rod 23 and the second connecting rod 24 or between the first sliding section 29 and the second sliding section 32, which can shorten the movable stroke of each component, that is, there are overlapping sections in the stroke of each component, which is convenient for realizing linkage in the width direction of the clamping seat 2.

[0059] like Figure 9 and 10, the second axis B and the third axis C are located at the same height, and the distance between them and the first axis A is always the same. The first clamping member 3 and the second clamping member 22 move from the expanded state to the clamped state, and the first axis A reduces the height difference with the second axis B or the third axis C. When the first clamping member 3 and the second clamping member 22 are in the clamped state, the first axis A is located above the second axis B or the third axis C, so that the first connecting rod 23 and the second connecting rod 24 maintain a pre-expanded state. In the pre-expanded state, the first axis A is slightly higher than the second axis B or the third axis C, so that the first connecting rod The inner sides of 23 and the second connecting rod 24 are slightly arched. If the first axis A, the second axis B and the third axis C are at the same height, when the clamping member is pulled, the forces between the clamping member and the connecting rod, and between the connecting rod and the hinge seat 21 are on the same plane. The hinge seat 21 and the connecting rod are not subjected to upward force, and it is difficult for both to move upward or rotate. The pre-expansion setting of the first connecting rod 23 and the second connecting rod 24 can transmit force upward when the cloth clamping cleaning tool is switched from the clamping state to the expanded state, so that the movement of each component of the cleaning tool is smoother.

[0060] In this embodiment, a third sliding section 35 is also provided on the first clamping member 3, and a fourth sliding section 36 is also provided on the second clamping member 22. The first sliding section 29 and the second sliding section 32 are stacked up and down, and an elastic member 37 is connected between the first sliding section 29 and the second sliding section 32. The third sliding section 35 and the fourth sliding section 36 are stacked up and down, and an elastic member 37 is also connected between the third sliding section 35 and the fourth sliding section 36. The elastic force of the elastic member 37 can drive the first clamping member 3 and the second clamping member 22 to move synchronously back to back to the expanded state, or by pressing any one of the first clamping member 3 and the second clamping member 22, the elastic member 37 can pull the other clamping member, so that the first clamping member 3 and the second clamping member 22 can move synchronously toward each other to the clamping state. The two clamping members are automatically unfolded by the elastic member 37. Compared with separately arranging the elastic member 37, arranging the elastic member 37 between the two clamping members can improve the synchronization between the two clamping members. Even if one of the connecting rods or clamping members is stuck, the movement of the other connecting rod or clamping member can be transmitted to the connecting rod or clamping member through the elastic member 37 to drive its movement, and the activity state between the two clamping members always remains synchronized.

[0061] Specifically, such as Figure 7 and 8The first sliding section 29 and the third sliding section 35 are symmetrically arranged along the first connecting rod 23, and the second sliding section 32 and the fourth sliding section 36 are symmetrically arranged along the second connecting rod 24. The two sides of the first connecting rod 23 are respectively rotatably connected with the first sliding section 29 and the third sliding section 35, so that a connecting ring is formed between the first clamping member 3 and the first connecting rod 23, and the two sides of the second connecting rod 24 are respectively rotatably connected with the second sliding section 32 and the fourth sliding section 36, so that a connecting ring is formed between the second clamping member 22 and the second connecting rod 24. During installation, the first sliding section 29 is attached to the top of the second sliding section 32, and the third sliding section 35 is attached to the bottom of the fourth sliding section 36, connecting the first clamping member 3, the second clamping member 22, the first connecting rod 23 and the second connecting rod 24 into an integral clamping module. The rotationally symmetrical installation structure of the first clamping member 3 and the second clamping member 22 does not require deliberate distinction between the first clamping member 3 and the second clamping member 22 during production and assembly. That is, after the two first clamping members 3 are installed with each other, the first clamping member 3 and the second clamping member 22 are formed by their relative positions, thereby avoiding the situation where two different clamping members are taken or installed incorrectly, and the assembly efficiency is higher; the first clamping member 3, the second clamping member 22, the first connecting rod 23, and the second connecting rod 24 are cross-connected in the form of two connecting rings, so that the two groups of components form an O-chain, which has a simple structure and can be stably connected even without the assistance of screws or snap-on structures. The various components are first installed as an integral clamping module and then installed on the clamping seat 2, which is convenient for assembly line division of labor and can improve the assembly efficiency of workers.

[0062] In this embodiment, the first sliding section 29 is provided with a first slide 38, and the end of the first slide 38 away from the first clamping section 30 is provided with a first sink 39 and a first hook 40, the second sliding section 32 is provided with a second slide 41, and the end of the second slide 41 away from the second clamping section 33 is provided with a second hook 42, the first sink 39 is inserted into the second slide 41 and can move along the second slide 41, and the two ends of the elastic member 37 are respectively installed on the first hook 40 and the second hook 42, and the two ends of the elastic member 37 are at the same height. The direction of the elastic force released by the elastic member 37 is parallel to or on the same straight line as the moving direction of the first sliding section 29 and the second sliding section 32.

[0063] Similarly, the fourth sliding section 36 is provided with a third slide 43. The end of the third slide 43 away from the second clamping section 33 is provided with a second sinker 44 and a third hook 45. The third sliding section 35 is provided with a fourth slide 46. The end of the fourth slide 46 away from the first clamping section 30 is provided with a fourth hook 47. The second sinker 44 is inserted into the fourth slide 46 and can move along the fourth slide 46. The two ends of the elastic member 37 are respectively mounted on the third hook 45 and the fourth hook 47. The two ends of the elastic member 37 are located at the same height. The direction of the elastic force released by the elastic member 37 is parallel to or on the same line with the movement direction of the third sliding section 35 and the fourth sliding section 36. The direction of the elastic force of the elastic member 37 is parallel to or on the same line with the movement direction of each sliding section, which improves the force transmission effect and makes the movement of each sliding section smoother. It avoids the situation where the tilted elastic force of the elastic member causes the upper and lower sliding sections to fit more tightly and increase friction. At the same time, a guide track is formed between the sinker and the slide, and each sliding section can move along a preset direction.

[0064] Preferably, the elastic member 37 is configured as an accessory for releasing elastic force by stretching, such as a tension spring, an elastic belt, an elastic rope, or a rubber band.

[0065] In the above embodiment, a movable hole 48 is provided in the center of the clamping seat 2, which passes through the upper and lower parts. The first connecting rod 23 and the second connecting rod 24 can move up and down in the movable hole 48. The clamping seat 2 is provided with a third sinking platform 49 on each side close to the short side. A guide rod 25 is provided on the third sinking platform 49. The lower end of the third sinking platform 49 forms a first track 50. The first clamping member 3 and the second clamping member 22 can move along the first track 50 close to each other. The first track 50 limits the up and down movement of the first clamping member 3 and the second clamping member 22. In other embodiments, the third sinking platform 49 can be provided on only one of the first clamping member 3 and the second clamping member 22. Any one of the first clamping member 3 and the second clamping member 22 moves along the first track 50 to indirectly drive the other clamping member to move along the direction of the first track 50. The first track 50 limits the up and down movement of any one clamping member, thereby indirectly limiting the up and down movement of the other clamping member.

[0066] The clamping seat 2 is provided with a support column 51 on each side close to the long side, and a second track 52 is provided on the side of the support column 51. The first connecting rod 23 and the second connecting rod 24 are provided with a clearance hole at the position corresponding to the support column 51. The second rotating shaft 31 and the third rotating shaft 34 enter the second track 52 for movement, and the second track 52 limits the up and down movement of the second rotating shaft 31 and the third rotating shaft 34. In other embodiments, only one support column 51 can be provided on one side, and the support seat cooperates with any one of the connecting rods to limit the position, so that any one of the rotating shafts enters the second track 52 for movement.

[0067] Preferably, the third sinking platform 49 and the support column 51 are fixedly arranged at the lower end of the upper cover 26 and abut against the upper end of the lower cover 27. The third sinking platform 49 and the support column 51 jointly play a supporting role to prevent the upper cover 26 or the lower cover 27 from deforming toward the middle cavity.

[0068] In the above embodiment, a switch assembly is also provided on the clamping seat 1, and the switch assembly includes a button 53 and a spring. The button 53 can be installed on the hinge seat 21 so as to be laterally movable. A hook 54 is provided at the lower end of the button 53, and a socket for the hook 54 to pass through is provided on the clamping seat 2. The hinge seat 21 and the hook 54 move down to a low position, and the hook 54 can move downward into the socket and cooperate with the clamping seat 2 to limit the position to prevent the hinge seat 21 from moving upward. By pressing the button 53, the hook 54 is released from the limit, and the elastic member 37 releases the elastic force to cause the hinge seat 21, the first clamping member 3, the second clamping member 22, the first connecting rod 23 and the second connecting rod 24 to automatically move to the expanded state.

[0069] Preferably, a spring is provided between the button 53 and the hinge seat 21. The elastic force of the spring keeps the button 53 in an outwardly extended state. In this state, the hook 54 cooperates with the clamping seat 2 for positioning. The clamping seat 2 is provided with a guide surface 55 at the edge of the socket. When the hinge seat 21 and the button 53 move downward and pass the socket position, the hook 54 and the guide surface 55 hit each other. While the hook 54 moves along the guide surface 55, the button 53 overcomes the elastic force of the spring and moves inward, so that the hook 54 passes through the socket and cooperates with the clamping seat 2 for positioning.

[0070] The following describes the steps and principles of using the cloth-clamped cleaning tool of the present invention:

[0071] When the wiper 10 needs to be removed, the button 53 is pressed to move inward, the hook 54 and the clamping seat 2 are released from the limit, and the elastic member 37 releases the elastic force to pull the first clamping member 3 and the second clamping member 22 to move backwards at the same time. The first clamping member 3 and the second clamping member 22 drive the lower ends of the first pull rod and the second pull rod to move toward each other and rotate through the second rotating shaft 31 and the third rotating shaft 34. The upper ends of the first pull rod and the second pull rod move upward and rotate, driving the hinged seat 21 and the handle 20 to move to a high position. At the end of the movement, the first clamping member 3 and the second clamping member 22 extend from the side of the clamping seat 2, the first tooth moves away from the second tooth, and the wiper 10 is removed from the clamping seat 2.

[0072] When installing the wiper 10, the wiper 10 is laid flat on the ground, the handle 20 is lifted to align the clamping seat 2 with the position of the wiper 10, and the hinged seat 21 is pressed downward or the handle 20 is rotated to an angle approximately perpendicular to the clamping seat 2 and the handle 20 is pressed. The hinged seat 21 moves vertically downward under the limiting and guiding action of the guide rod 25, and drives the first connecting rod 23 and the second connecting rod 24 to move downward and rotate outward. The lower ends of the first connecting rod 23 and the second connecting rod 24 respectively push the first clamping member 3 and the second clamping member 22 to overcome the elastic force of the elastic member 37 and move toward each other, the first teeth and the second teeth are close to each other, the hook 54 and the guide surface 55 are pressed, and the hook 54 moves along the guide surface 55 so that the button 53 overcomes the elastic force of the spring and moves inward, so that the hook 54 passes through the insertion hole and cooperates with the clamping seat 2 for positioning. At this time, the first teeth and the second teeth are in a cross-engaged position and clamp the two sides of the wiper 10, and the installation of the wiper 10 is completed.

[0073] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A clamping assembly, comprising a clamping seat and a first clamping member in a movable fit, wherein the clamping seat is provided with a first clamping tooth, and the first clamping member is provided with a second clamping tooth, characterized in that: The second clamping tooth is located below the first clamping tooth, and a clamping cavity is provided between the first clamping tooth and the second clamping tooth. The first clamping tooth and / or the second clamping tooth are provided with a barb tooth, and the barb tooth extends into the clamping cavity. The first clamping member moves from the open position to the clamping position, driving the object to be clamped to approach the first clamping tooth until it is clamped and fixed by the first clamping tooth and the second clamping tooth, and at least part of the object to be clamped enters the clamping cavity and is clamped and fixed by the barb tooth.

2. The clamping assembly according to claim 1, wherein: The clamping seat is provided with a first clamping portion below the first clamping tooth, and the first clamping member is provided with a second clamping portion above the second clamping tooth. The first clamping tooth, the second clamping tooth, the first clamping portion and the second clamping portion form the clamping cavity, and the objects to be clamped are clamped and fixed simultaneously between the first clamping tooth and the second clamping portion, between the barb tooth and the clamping cavity, and between the second clamping tooth and the first clamping portion.

3. The clamping assembly according to claim 2, wherein: A first boss extending laterally is provided at the end of the clamping seat, and a third clamping tooth is provided on the first boss. The third clamping tooth and the first clamping tooth cooperate with the second clamping portion to clamp the object to be clamped, and the distance between the third clamping tooth and the second clamping portion is smaller than the distance between the first clamping tooth and the second clamping portion.

4. The clamping assembly according to claim 3, wherein: The clamping seat is also provided with a second boss extending vertically below the first boss, and the second boss is provided with a fourth clamping tooth arranged laterally. A third boss is provided on the end of the first clamping member, and the height of the third boss is adapted to the second boss. The second clamping teeth on the third boss extend along the height of the third boss and are staggered and clamped with the fourth clamping teeth.

5. The clamping assembly according to claim 4, characterized in that Auxiliary teeth extending up and down are provided at the bottom of the first clamping portion, and the auxiliary teeth extend from the bottom of the clamping seat to fit the object to be clamped.

6. A cloth-clamped cleaning tool, characterized in that: The clamping assembly comprises a handle and a clamping assembly according to any one of claims 1 to 5, wherein the clamping seat is provided with a hinge seat movably connected to the handle, the first clamping member is movably mounted on one side of the clamping seat, and the clamping seat is further provided with a movable second clamping member on the other side relative to the first clamping member, the first clamping member is connected to a first connecting rod, the second clamping member is connected to a second connecting rod, the first connecting rod and the second connecting rod are both rotatably mounted on the hinge seat, the hinge seat can move up and down relative to the clamping seat, and the clamping seat and the hinge seat are At least one guide rod is provided between the joints, and the guide rod prevents the hinged seat from rotating relative to the first connecting rod or the second connecting rod. When the wiper is installed, the first clamping member and the second clamping member are in the expanded state. By pressing the handle or the hinged seat, the guide rod guides the hinged seat to move downward in the vertical direction and synchronously drives the first connecting rod and the second connecting rod to move, so that the first clamping member and the second clamping member move toward each other to clamp the wiper. A switch assembly is also provided on the clamping seat, and the switch assembly positions the first clamping member and the second clamping member in the clamping state.

7. The cloth-clamped cleaning tool according to claim 6, characterized in that: The first clamping member includes a first sliding section and a first clamping section, the lower end of the first connecting rod is rotatably connected to the first sliding section along a second axis, the second clamping member includes a second sliding section and a second clamping section, the lower end of the second connecting rod is rotatably connected to the second sliding section along a third axis, when the first clamping member and the first connecting rod move, the distance between the first axis and the first clamping section is always greater than the distance between the first axis and the second clamping section, when the second clamping member and the second connecting rod move, the distance between the second axis and the second clamping section is always greater than the distance between the second axis and the first clamping section.

8. The cloth-clamped cleaning tool according to claim 7, characterized in that: The first clamping member and the second clamping member are stacked up and down and connected, and the first connecting rod and the second connecting rod are both rotatably connected to the hinge seat along the first axis. The first clamping member and the second clamping member move from the expanded state to the clamped state, and the first axis reduces the height difference with the second axis or the third axis. When the first clamping member and the second clamping member are in the clamped state, the first axis is located above the second axis or the third axis, so that the first connecting rod and the second connecting rod maintain a pre-expanded state.

9. The cloth-clamped cleaning tool according to claim 8, characterized in that: The first sliding section and the second sliding section are stacked up and down, and an elastic member is connected between the first sliding section and the second sliding section. The elastic force of the elastic member can drive the first clamping member and the second clamping member to move synchronously back to back to the expanded state, or by pressing any one of the first clamping member and the second clamping member, the elastic member can pull the other clamping member, so that the first clamping member and the second clamping member can move synchronously toward each other to the clamping state.

10. The cloth-clamped cleaning tool according to claim 9, characterized in that: The first clamping member is also provided with a third sliding section, and the second clamping member is also provided with a fourth sliding section. The two sides of the first connecting rod are respectively rotatably connected to the first sliding section and the third sliding section, so that a connecting ring is formed between the first clamping member and the first connecting rod, and the two sides of the second connecting rod are respectively rotatably connected to the second sliding section and the fourth sliding section, so that a connecting ring is formed between the second clamping member and the second connecting rod. During installation, the first sliding section is affixed to the top of the second sliding section, and the third sliding section is affixed to the bottom of the fourth sliding section, connecting the first clamping member, the second clamping member, the first connecting rod, the second connecting rod and the elastic member into an integral clamping module.

11. The cloth-clamped cleaning tool according to claim 10, characterized in that: The first sliding section is provided with a first slide, and the end of the first slide away from the first clamping section is provided with a first sink and a first hook, the second sliding section is provided with a second slide, and the end of the second slide away from the second clamping section is provided with a second hook, the first sink is inserted into the second slide and can move along the second slide, the two ends of the elastic member are respectively installed on the first hook and the second hook, the two ends of the elastic member are located at the same height, and the direction of the elastic force released by the elastic member is parallel to or on the same straight line with the moving direction of the first sliding section and the second sliding section; And / or, the fourth sliding section is provided with a third slide, the end of the third slide away from the second clamping section is provided with a second sinker and a third hook, the third sliding section is provided with a fourth slide, the end of the fourth slide away from the first clamping section is provided with a fourth hook, the second sinker is inserted into the fourth slide and can move along the fourth slide, the two ends of the elastic member are respectively installed on the third hook and the fourth hook, the two ends of the elastic member are at the same height, and the direction of the elastic force released by the elastic member is parallel to or on the same straight line with the moving direction of the third sliding section and the fourth sliding section.

Images