Folding device of front folding dust collector and folding method thereof

Abstract

A folding device of a front folding dust collector comprises a machine body and a dust collection head, the machine body is provided with a main body and a handle rotationally connected with the main body, the dust collection head is arranged at the end, not rotationally connected with the handle, of the main body, and a first shaft sleeve is arranged in the middle of the end, close to the handle, of the main body; second shaft sleeves which are symmetrically distributed on the two sides of the first shaft sleeve and are coaxial with the first shaft sleeve are arranged at the end, close to the body, of the handle, shaft pieces which partially extend into the first shaft sleeve and can rotate around the axis of the first shaft sleeve are arranged in the second shaft sleeves, the two shaft pieces are matched in an inserted mode, and rotation stopping units are arranged at the outer ends of the shaft pieces. The outer end of the second shaft sleeve is provided with a stop connection point; a locking unit is arranged at the inner end of one shaft piece, and a locking contact is arranged at the inner end of the other shaft piece; a movable positioning unit which takes magnetic force as a power source is arranged in the middle of the first shaft sleeve, and a plurality of positioning connection points representing different angle values are further arranged at the inner end of the shaft piece provided with the locking connection points.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning equipment, in particular to a folding device of a front-folding vacuum cleaner and a folding method thereof. Background Art

[0002] Vacuum cleaners are widely used for indoor and outdoor cleaning. Existing vacuum cleaners are mainly divided into two types: upright and handheld. Upright vacuum cleaners can be moved on the ground to remove dust and are suitable for cleaning large areas; handheld vacuum cleaners are usually small in size and can be used to remove dust in small areas such as walls, sofas, window sills, and desktops.

[0003] Publication (announcement) number: CN215687421U discloses a folding structure of a combined vacuum cleaner, including a vacuum cleaner handle installed on the top of the vacuum cleaner body, a flip structure for folding the vacuum cleaner handle is installed between the vacuum cleaner handle and the vacuum cleaner body, and a snap structure for connecting the vacuum cleaner body is installed at the lower part of the inner cavity of the vacuum cleaner handle; wherein, the vacuum cleaner handle is rotatably connected to the vacuum cleaner body through a flip structure; wherein, the flip structure includes a damping shaft, which is installed on the rear side between the vacuum cleaner handle and the vacuum cleaner body, a plurality of grooves are provided on the circumferential surface of the damping shaft, and balls for reducing surface friction of the damping shaft are installed in the grooves, and the surface of the balls is rollingly connected to the bottom of the vacuum cleaner handle. The folding structure of this vacuum cleaner can support the rotational connection between the handle and the body, and can meet the requirement of not being pulled by the vacuum cleaner head when in use. However, there is a defect, namely, there is a lack of positioning structure on the folding mechanism. The lack of positioning structure makes it impossible for the handle to be maintained at a fixed folding angle, so the user needs to control the arm to keep the handle at a fixed folding angle. The intensity of use of the vacuum cleaner is high, and the arm is prone to fatigue. At the same time, the damping shaft and the handle are tightly matched, that is, the damping shaft is prevented from rotating inside the handle through the tightly matched fit, which does not affect the rotation of the handle itself. This method requires the use of auxiliary tools to remove it during maintenance, but the handle itself is a plastic part, which will leave traces of disassembly during disassembly, and may also cause cracks on the handle. Summary of the invention

[0004] The present invention aims to solve the above-mentioned shortcomings of the prior art and provides a folding device and a folding method for a front-folding vacuum cleaner to solve the above-mentioned problems.

[0005] The present invention solves the technical problem by adopting a technical solution: the folding device of the front-folding vacuum cleaner comprises a body and a vacuum cleaner head, the body comprises a main body and a handle rotatably connected to the main body, the vacuum cleaner head is arranged at one end of the main body which is not rotatably connected to the handle, the main body is provided with a first shaft sleeve at a central position of an end close to the handle, the handle is provided with a second shaft sleeve symmetrically distributed on both sides of the first shaft sleeve and coaxial with the first shaft sleeve at an end close to the main body, a shaft member partially extending into the first shaft sleeve and rotatable around the axis of the first shaft sleeve is arranged in the second shaft sleeve, the two shaft members are plug-in matched,

[0006] The outer end of the shaft is provided with a rotation-stop unit, and the outer end of the second sleeve is provided with a rotation-stop point, so as to prevent the shaft from rotating around the axis of the second sleeve through the combination of the rotation-stop unit and the rotation-stop point, and the second sleeve rotates with the shaft when the shaft rotates around the axis of the first sleeve;

[0007] A locking unit is provided at the inner end of one of the shaft members, and a locking contact is provided at the inner end of the other shaft member, so that the two shaft members are prevented from being separated after being plugged in through the combination of the locking unit and the locking contact, and the first shaft sleeve and the two second shaft sleeves are kept coaxially arranged while being kept in the corresponding second shaft sleeves;

[0008] A movable positioning unit which uses magnetic force as a power source is arranged at the center position of the first sleeve, and a plurality of positioning contacts representing different angle values ​​are also arranged at the inner end of the shaft member which is provided with a locking contact, so as to prevent the shaft member from rotating around the axis of the first sleeve through the combination of the positioning unit and the positioning contacts, and maintain the state after the angle change.

[0009] To be further improved, the shaft member includes a shaft sleeve cover and a shaft body. The shaft sleeve cover is internally recessed to form an outer retaining ring. The outer end of the shaft body is placed in the recessed area of ​​the shaft sleeve cover and an insertion gap is formed between the outer retaining ring and the second shaft sleeve. An inner retaining ring extending outward is provided on the outer end surface of the second shaft sleeve. The inner retaining ring is inserted into the insertion gap when the shaft member is set on the second shaft sleeve. The anti-rotation unit is provided on the inner end surface of the outer retaining ring to combine with the anti-rotation contact point when the shaft member is set on the second shaft sleeve.

[0010] To be further improved, the anti-rotation unit includes a plurality of anti-rotation tongues equidistantly distributed along the circumferential direction of the outer retaining ring, and the position and number of the anti-rotation contact points match the anti-rotation tongues. It includes an inner peripheral surface, a anti-rotation space confined within the inner peripheral surface and allowing the anti-rotation tongue to be placed therein, and the inner peripheral surface abuts against the anti-rotation tongue at least in a direction opposite to the insertion direction.

[0011] To further improve the structure, a first extension body is provided at the inner end of the shaft body of the shaft member provided with a locking unit, a rotating cavity for the rotating rod to rotate in is provided between the first extension body, the shaft body, and the shaft sleeve cover, the outer end of the rotating rod extends outside the rotating cavity and is provided with a gripping handle, and the inner end is used to set the locking unit, so that when the locking unit and the locking contact are combined, the two shaft members can be locked by rotation to prevent separation, and a second extension body is provided at the inner end of the shaft body of the shaft member provided with the locking contact, the second extension body is provided with an insertion cavity for the first extension body to be inserted into, and the locking contact is provided in the insertion cavity to be combined with the locking unit when the first extension body is inserted into the insertion cavity.

[0012] To be further improved, the locking unit includes a lock tongue arranged on the outer circumferential surface of the rotating rod, a limit groove is arranged at the inner end of the first extension body, which allows the lock tongue to extend out of the first extension body and limits the rotation angle of the rotating rod, and a first guide channel and a second guide channel are arranged on the inner circumferential surface of the insertion cavity to guide the lock tongue to reach the locking contact through the assembly direction.

[0013] For further improvement, a mounting seat perpendicular to the first sleeve is provided at a central position on the outer circumferential surface of the first sleeve, a countersunk hole is provided between the mounting seat and the first sleeve, a positioning unit is arranged in the countersunk hole and is movable, a round block matching the position of the positioning unit is provided on the outer circumferential surface of the second extension body, a plurality of convex teeth equidistantly distributed along its circumferential direction are provided on the outer circumferential surface of the round block, and the space between two adjacent convex teeth is used as a positioning contact.

[0014] Further improvement, the positioning unit includes a magnetic controller, a magnetic sensitive resistor, an electromagnetic plate, a magnetic push block, a slide rod, a spring, and a positioning tongue. The upper end of the mounting seat is threadedly connected to a seat cover. The upper end of the seat cover is formed with an upper mounting groove for setting the magnetic controller and the magnetic sensitive resistor, and the lower end is formed with a lower mounting groove for setting the electromagnetic plate. The magnetic push block is combined with the slide rod and moves in the countersunk hole. The spring is set in the large diameter end of the countersunk hole and one end is supported on the large diameter end of the countersunk hole, and the other end is supported on the magnetic push block. The positioning tongue is set on the lower end surface of the slide rod.

[0015] Further improvement, the magnetic controller is used to adjust the size of the magnetic force value, the magnetic sensitive resistor is set to have a larger resistance value when the magnetism is greater and a smaller resistance value when the magnetism is smaller. The magnetic sensitive resistor is used to adjust the size of the current value required by the electromagnetic plate, and the magnetism of the electromagnetic plate is the same as that of the magnetic push block.

[0016] Further improvement, the configuration of the positioning tongue is consistent with the spatial configuration of the positioning contact.

[0017] A folding method using a folding device, the steps comprising:

[0018] Step 1: First, assemble the main body and the handle so that the two are assembled together through the buckle and the clamping plate, and the first sleeve is inserted between the two second sleeves;

[0019] Step 2: insert the shaft member provided with the locking contact into the corresponding second sleeve, and align the anti-rotation tongue element with the anti-rotation contact point and insert it together with the shaft member, then insert the shaft member provided with the locking unit into the corresponding second sleeve and plug and match it with the second extension body through the first extension body, and align the anti-rotation tongue element with the anti-rotation contact point and insert it together with the shaft member when the shaft member is inserted, so as to complete the preliminary connection of the two shaft members and achieve the purpose of preventing the shaft member from rotating around the axis of the second sleeve;

[0020] Step 3: After the two shafts are plugged in and matched, the rotating rod can be controlled. The lock tongue is at the starting point of the limit groove, that is, it matches the position of the first guide channel. Then the rotating rod is controlled to move along the assembly direction provided by the first guide channel, so that the lock tongue enters the second guide channel. Then the rotating rod is controlled to rotate forward by 0° to reach the positioning contact point, so that the lock tongue and the first guide channel are misaligned to achieve locking. When disassembling the main body and the handle, the rotating rod is controlled to rotate backward by 0° to unlock.

[0021] Step 4: When the vacuum cleaner is in the folded state, the unlocking button on the outer surface of the handle is pressed to move the moving rod in the handle forward, and then the moving rod drives the buckle to move forward, and releases the engagement with the snap-in plate in the main body. After release, the handle is rotated to completely detach the buckle from the main body.

[0022] Step 5. When the handle needs to be kept at the angle required by the user, turn off the magnetic switch. The resistance value of the magnetoresistor decreases accordingly due to the decrease in the surrounding magnetic force. At this time, the magnetic force of the electromagnetic plate increases, driving the magnetic push block to move under the magnetic repulsion of the electromagnetic plate to overcome the elastic potential energy of the spring. The slide bar moves accordingly to allow the positioning tongue to enter the positioning node. The shaft stops rotating under the constraint of the positioning tongue to keep the handle at the angle required by the user.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention prevents the shaft from rotating around the axis of the first sleeve in an interference manner by setting a rotation-stop unit and a rotation-stop contact point, and this method does not require the two to be tightly matched, which facilitates subsequent disassembly;

[0025] 2. The present invention provides locking units and locking contacts on the two shafts respectively, so that the two shafts can be stably connected after being plugged in, thereby preventing the first shaft sleeve from being separated from the second shaft sleeve and maintaining the coaxial arrangement of the first shaft sleeve and the two second shaft sleeves;

[0026] 3. The present invention prevents the shaft from rotating around the axis of the first sleeve by setting the positioning unit and the positioning contact, so that the handle can always be kept in a folded state at a certain angle. The different angles make the height distance of the handle from the ground match the height and usage habits of the user. In this way, the user does not need to deliberately control the bending change of the arm to keep the handle at the folding angle required by the user. The user only needs to control the swing amplitude of the arm during use, thereby reducing the cleaning intensity;

[0027] 4. The positioning unit of the present invention uses magnetic force as a power source, which can reduce the overall volume of the positioning unit and meet the volume requirements of the first sleeve. In addition, compared with cylinders, these actuators do not need to be connected to an air source, etc., and can be powered by the power carried by the vacuum cleaner. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the front side of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the back of the present invention;

[0030] Figure 3 For the present invention Figure 2 A partial enlarged schematic diagram of part A;

[0031] Figure 4 For the present invention Figure 3 A partial enlarged schematic diagram of part B;

[0032] Figure 5 It is a schematic diagram of the full cross-section structure of the cooperation of two shaft members of the present invention;

[0033] Figure 6 It is a schematic structural diagram of one of the shaft members of the present invention;

[0034] Figure 7 It is a schematic structural diagram of another shaft member of the present invention;

[0035] Figure 8 It is a schematic diagram of the full cross-section structure of the main body and the handle rotation connection end of the present invention;

[0036] Fig. 9 It is a schematic diagram of the full cross-section structure of the front side of the present invention. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings:

[0038] Referring to the accompanying drawings: the folding device of this front-folding vacuum cleaner includes a body 1 and a dust collector head 2. The body 1 has a main body 11 and a handle 12 rotatably connected to the main body 11. The dust collector head 2 is arranged at the end of the main body 11 that is not rotatably connected to the handle 12. The main body 11 is provided with a first shaft sleeve 3 at a central position of the end close to the handle 12. The handle 12 is provided with a second shaft sleeve 4 symmetrically distributed on both sides of the first shaft sleeve 3 and coaxial with the first shaft sleeve 3 at the end close to the main body 11. A shaft member 5 is provided in the second shaft sleeve 4, which partially extends into the first shaft sleeve 3 and can rotate around the axis of the first shaft sleeve 3. The two shaft members 5 are plug-fitted. The folding method makes it easier for the user to control the vacuum cleaner when in use, that is, by lowering the height of the handle 12 so that the handle 12 is located at the user's waist, the user's forearm and upper arm can naturally droop to increase the swing amplitude of the forearm, and the force applied to the vacuum cleaner is also increased accordingly. In this way, the user does not need to follow the motion trajectory of the vacuum cleaner head 2 when it rotates, nor does he need to bend down when controlling the vacuum cleaner to move significantly. The user can easily drag the vacuum cleaner back and forth to clean the target area, thereby reducing the cleaning intensity.

[0039] An unlocking button 12-1 is provided on the outer surface of the handle 12, and a moving rod 12-2 and a buckle 12-3 driven by the unlocking button 12-1 are provided inside. A snap-on plate 11-1 snapped with the buckle 12-3 is provided inside the main body 11. The moving rod 12-2 moves when the unlocking button 12-1 is pressed downward, and drives the buckle 12-3 to move in a direction away from the snap-on plate 11-1. An extrusion plate 11-2 is provided at a position opposite to the snap-on plate 11-1. The buckle 12-3 is squeezed when it contacts the extrusion plate 11-2. After being squeezed, it is bent upward so that the buckle 12-3 is separated from the height position of the snap-on plate 11-1 and is completely placed in the channel where the buckle 12-3 passes through the handle 12 and enters the main body 11, so that the buckle 12-3 can be completely separated from the main body 11 after the handle 12 is rotated, so that a usage angle is generated between the main body 11 and the handle 12.

[0040] A stop unit 6 is provided at the outer end of the shaft 5, and a stop contact point 7 is provided at the outer end of the second sleeve 4, so as to prevent the shaft 5 from rotating around the axis of the second sleeve 4 through the combination of the stop unit 6 and the stop contact point 7, and when the shaft 5 rotates around the axis of the first sleeve 3, the second sleeve 4 rotates with the shaft 3. The traditional method is to prevent the shaft member 5 from rotating around the axis of the second sleeve 4 by the tight fit between the shaft member 5 and the second sleeve 4, and the tight strength is high. This method may make disassembly difficult when replacing the shaft member 5, that is, it is necessary to use auxiliary tools such as screwdrivers for disassembly, but the second sleeve 4 itself is a plastic part, and disassembly will leave disassembly marks on the second sleeve 4 during disassembly, and it may also cause cracks in the second sleeve 4. Therefore, this situation is avoided by setting the stop unit 6 and the stop contact 7. After the stop unit 6 and the stop contact 7 are combined, there is interference on the rotation trajectory of the shaft member 5, so as to prevent the shaft member 5 from rotating around the axis of the first sleeve 3 through interference. Moreover, this method does not require the two to have a tight fit, which facilitates subsequent disassembly.

[0041] A locking unit 8 is provided at the inner end of one of the shaft members 5, and a locking contact 9 is provided at the inner end of the other shaft member 5, so that the two shaft members 5 are prevented from separating after plugging and fitting through the combination of the locking unit 8 and the locking contact 9, and the first shaft sleeve 3 and the two second shaft sleeves 4 are kept coaxially arranged while the shaft members themselves are kept in the corresponding second shaft sleeve 4. Considering that the tightness of the fit between the anti-rotation unit 6 and the anti-rotation contact 7 is generally good, in order to prevent the shaft member 5 from separating from the second shaft sleeve 4, a locking unit 8 is provided at the inner end of one of the shaft members 5, and a locking contact 9 is provided at the inner end of the other shaft member 5. The combination of the locking unit 8 and the locking contact 9 occurs after the two shaft members 5 are plugged and fitted, and after locking, the two shaft members 5 can be prevented from separating, thereby achieving the effect of keeping the shaft member 5 in the second shaft sleeve 4, and also keeping the first shaft sleeve 3 and the two second shaft sleeves 4 coaxially arranged.

[0042] A positioning unit 10 that uses magnetic force as a power source and is movable is provided at the center of the first sleeve 3. The inner end of the shaft 5 provided with a locking contact 9 is also provided with a plurality of positioning contacts 20 representing different angle values, so that the shaft 5 is prevented from rotating around the axis of the first sleeve 3 by the combination of the positioning unit 10 and the positioning contacts 20, and the state after the angle change is maintained. The handle 12 can always be kept in a folded state at a certain angle after rotation, and the different angles make the height distance of the handle 12 from the ground match the height and usage habits of the user, so that the user does not need to deliberately control the bending change of the arm to keep the handle 12 at the folding angle required by the user when using it. The user only needs to control the swing amplitude of the arm during use, thereby reducing the cleaning intensity.

[0043] The shaft member 5 includes a shaft sleeve cover 51 and a shaft body 52. ​​The shaft sleeve cover 51 is recessed to form an outer retaining ring 51-1. The outer end of the shaft body 52 is placed in the recessed area of ​​the shaft sleeve cover 51 and an insertion gap 51-11 is formed between the outer retaining ring 51-1. The outer end surface of the second shaft sleeve 4 is provided with an inner retaining ring 41 extending outward. The inner retaining ring 41 is inserted into the insertion gap 51-11 when the shaft member 5 is arranged on the second shaft sleeve 4. The anti-rotation unit 6 is arranged on the inner end surface of the outer retaining ring 51-1 to be combined with the anti-rotation contact point 7 when the shaft member 5 is arranged on the second shaft sleeve 4. The shaft sleeve cover 51 is covered on the second shaft sleeve 4, that is, through the outer retaining ring 51-1 and the shaft body 5 The insertion gap 51-11 formed by the outer retaining ring 51-1 is plugged into the inner retaining ring 41 to quickly define the final assembly position of the shaft 5 in the second sleeve 4. When the shaft cover sleeve 51 is covered on the second sleeve 4, the shaft body 52 is synchronously inserted into the second sleeve 4, and part of the shaft body 52 is also placed in the first sleeve 3, so that the shaft body 52 rotates around the first sleeve 3 and the handle 12 is rotated. At the same time, the anti-rotation unit 6 is arranged on the inner end surface of the outer retaining ring 51-1, so that when the shaft cover sleeve 51 is covered on the second sleeve 4, the anti-rotation unit 6 is also synchronously combined with the anti-rotation contact point 7, so as to prevent the shaft 52 from rotating around the second sleeve 4.

[0044] The anti-rotation unit 6 includes a plurality of anti-rotation tongues 61 equidistantly distributed along the circumferential direction of the outer retaining ring 51-1. The position and number of the anti-rotation contact points 7 match the anti-rotation tongues 61. The anti-rotation unit 6 includes an inner peripheral surface 71 and an anti-rotation space 72 which is confined within the inner peripheral surface 71 and allows the anti-rotation tongue 61 to be placed therein. The inner peripheral surface 71 abuts against the anti-rotation tongue 61 at least in a direction opposite to the insertion direction. The anti-rotation tongue 61 is a plug-in structure, and the anti-rotation space.

[0045] The inner end of the shaft body 52 of the shaft member 5 provided with the locking unit 8 is provided with a first extension body 52-1, and a rotating cavity 52-11 for the rotating rod 30 to rotate is provided between the first extension body 52-1, the shaft body 52, and the shaft sleeve cover 51. The outer end of the rotating rod 30 extends to the outside of the rotating cavity 52-11 and is provided with a gripping handle 301. The inner end is used to set the locking unit 8, so that when the locking unit 8 and the locking contact 9 are combined, the two shaft members 5 are locked by rotation to prevent separation. The inner end of the shaft body 52 of the shaft member 5 provided with the locking contact 9 is provided with a second extension body 52-2, and the second extension body 52-2 is provided with an insertion cavity 52-21 for the first extension body 52-1 to be inserted therein. The locking contact 9 is provided in the insertion cavity 52-21, so as to be combined with the locking unit 8 when the first extension body 52-1 is inserted into the insertion cavity 52-21. The two shaft members 5 are provided with first extension bodies 52- 1 and the second extension body 52-2 enable the two shaft members 5 to be plugged in and matched, that is, the second extension body 52-2 has an insertion cavity 52-21 whose inner diameter is greater than the outer diameter of the first extension body 52-1, and locking is achieved after the two shaft members 5 are plugged in and matched, that is, by rotating the operating rotating rod 30, the locking unit 8 enters the locking contact 9 to achieve combination, thereby achieving locking, and at the same time, an internal thread is provided on the inner wall of the rotating cavity 52-11 located in the shaft sleeve cover 51, and the part of the rotating cavity 52-11 of the rotating rod 30 located in the shaft sleeve cover 51 is provided with an external thread, that is, the rotating rod 30 is limited to the shaft sleeve cover 51 by threaded matching, and the rotation angle of the threaded matching is consistent with the rotation angle of the locking unit 8 reaching the locking contact 9, so that the locking between the two shaft members 5 and the locking of the rotating rod 30 can be achieved, and the unlocking can be achieved by rotating the rotating rod 30 in the direction opposite to the locking direction, which is convenient and quick.

[0046] The locking unit 8 includes a locking tongue 81 arranged on the outer circumferential surface of the rotating rod 30, and a limiting groove 52-12 is arranged at the inner end of the first extension body 52-1 to allow the locking tongue 81 to extend outside the first extension body 52-1 and limit the rotation angle of the rotating rod 30. The inner circumferential surface of the insertion cavity 52-21 is provided with a first guide channel 52-211 and a second guide channel 52-212 for guiding the locking tongue 81 to reach the locking contact 9 through the assembly direction. The locking tongue 81 is a sheet with a thickness. When the rotating rod 30 is inserted into the insertion cavity 52-21, it enters the first guide channel 52-211, and reaches the first guide channel when the end face of the rotating rod 30 abuts against the cavity surface of the insertion cavity 52-21. The end point of the first guide channel 52-211 is connected to the starting point of the second guide channel 52-212, and the first guide channel 52-211 and the second guide channel 52-212 are arranged in an L-shaped configuration, so that the end point of the first guide channel 52-211 and the starting point of the second guide channel 52-212 are connected to each other, so that the locking tongue 81 is also located in the second guide channel 52-212 at the same time, so that the locking tongue 81 can reach the end point of the second guide channel 52-212 by rotating the rotating rod 30, and the locking contact 9 and the second guide channel 52-212 are connected to each other, and the locking tongue 81 also enters into the locking contact 9, thereby preventing the two shaft members 5 from separating by causing the locking tongue 81 and the first guide channel 52-211 to be misaligned.

[0047] A mounting seat 40 perpendicular to the first sleeve 3 is provided at a central position of the outer circumference of the first sleeve 3, a countersunk hole 401 is provided between the mounting seat 40 and the first sleeve 3, the positioning unit 10 is arranged in the countersunk hole 401 and is movable, a round block 50 matching the position of the positioning unit 10 is provided on the outer circumference of the second extension body 52-2, a plurality of convex teeth 501 equidistantly distributed along its circumferential direction are provided on the outer circumference of the round block 50, and a space between two adjacent convex teeth 501 is used as a positioning contact 20, the mounting seat 40 allows the positioning unit 10 to move inside, the round block 50 combines with the plurality of convex teeth 501 to form a gear, and the gear obtains a plurality of positioning contacts 20, each positioning contact 20 represents an angle value, and when the positioning unit 10 is placed in the corresponding positioning contact 20, the handle 12 can be maintained at the desired folding angle, that is, the positioning unit 10 interferes with the rotation path of the shaft 5 and can generate a certain downward pressure on the round block 50, so as to achieve the purpose of preventing the shaft 5 from rotating, thereby realizing the folding angle maintenance.

[0048] The positioning unit 10 includes a magnetic force controller 101, a magnetic sensitive resistor 102, an electromagnetic plate 103, a magnetic push block 104, a slide bar 105, a spring 106, and a positioning tongue 107. The upper end of the mounting seat 40 is threadedly connected with a seat cover 402. The upper end of the seat cover 402 is formed with an upper mounting groove 402-1 for setting the magnetic force controller 101 and the magnetic sensitive resistor 102, and the lower end is formed with a lower mounting groove 402-2 for setting the electromagnetic plate 103. The magnetic push block 104 is combined with the slide bar 105 and moves in the countersunk hole 401. The spring 106 is arranged in the large diameter end of the countersunk hole 401 and one end is supported on the countersunk hole 401. 01 is on the large diameter end and the other end is supported on the magnetic push block 104. The positioning tongue 107 is arranged on the lower end surface of the slide bar 105. Such an arrangement can realize the use of magnetic force as a power source to drive the positioning unit 10 to move. The magnetic switch 101 is used to control the magnitude of the surrounding magnetic force value (the magnetic controller 101 is a device that can control the strength and direction of the magnetic field, including a magnet and a power supply. When the current passes through the coil, according to the law of magnetic induction, the current in the coil will generate a magnetic field. The magnitude and direction of the magnetic field depend on the magnitude of the current and the structure of the coil. The magnetic field can attract or repel surrounding objects. force), that is, the magneto-sensitive resistor 102 is set to have a larger resistance value as the magnetism increases and a smaller resistance value as the magnetism decreases, and is used to adjust the current value required by the electromagnetic plate 103. The magnetism of the electromagnetic plate 103 is the same as that of the magnetic push block 104. The magnetic force induced by the magneto-sensitive resistor 102 is reduced through the magnetic force controller 101, thereby reducing the resistance value of the magneto-sensitive resistor 102, thereby increasing the current of the electromagnetic plate 103 and the magnetic force, driving the magnetic push block 104 to move by the magnetic repulsion force of the electromagnetic plate 103 to overcome the elastic potential energy of the spring 106. When the magnetic push block 104 moves, the push rod 105 also moves, so as to This allows the push rod 105 to enter the first sleeve 3 and the positioning tongue 107 to be inserted into the positioning contact 20, thereby preventing the shaft 5 from rotating around the axis of the first sleeve 3, so as to keep the handle 12 at the folding angle required by the user and meet the user's usage needs. At the same time, the magnetic controller 101, the magnetic sensitive resistor 102, and the electromagnetic plate 103 are all arranged on the seat cover 402 to facilitate subsequent maintenance. The seat cover 402 can be directly replaced by removing it from the mounting seat 40, and the upper mounting groove 402-1 has an inner groove and an outer groove. The inner groove is used to set the magnetic controller 101, and the outer groove is used to set the magnetic sensitive resistor 102.

[0049] The configuration of the positioning tongue 107 is consistent with the spatial configuration of the positioning contact 20. Such a setting enables the positioning tongue 106 to completely fill the positioning contact 20 when the positioning tongue 107 is placed in the space formed by the two protruding teeth 501, i.e., the positioning contact 20, without any fitting gap, thereby achieving the purpose of completely preventing the rotation of the shaft 5 and maintaining the handle 12 at the folding angle required by the user.

[0050] A folding method using a folding device, the steps comprising:

[0051] Step 1: First, assemble the main body 11 and the handle 12 so that the two are assembled together through the buckle 12-2 and the clamping plate 11-1. At this time, the first sleeve 3 is inserted between the two second sleeves 4;

[0052] Step 2: insert the shaft member 5 provided with the locking contact 9 into the corresponding second sleeve 4, and align the anti-rotation tongue element 61 with the anti-transfer contact point 7 and insert it together with the shaft member 5, then insert the shaft member 5 provided with the locking unit 8 into the corresponding second sleeve 4 and plug and match it with the second extension body 52-2 through the first extension body 52-1, and align the anti-rotation tongue element 61 with the anti-transfer contact point 7 and insert it together with the shaft member 5, so as to complete the preliminary connection of the two shaft members 5 and achieve the purpose of preventing the shaft member 5 from rotating around the axis of the second sleeve 4;

[0053] Step 3, after the two shaft members 5 are plugged and matched, the rotating rod 30 can be operated. The lock tongue 81 is at the starting point of the limit groove 52-12, that is, it matches the position of the first guide channel 52-211. Then the rotating rod 30 is controlled to move along the assembly direction provided by the first guide channel 52-211, so that the lock tongue 81 enters the second guide channel 52-212, and then the rotating rod 30 is controlled to rotate 90° forward to reach the positioning contact 20, so that the lock tongue 81 and the first guide channel 52-211 are misaligned to achieve locking. When disassembling the main body 11 and the handle 12, the rotating rod 30 is controlled to reverse 90° to unlock.

[0054] Step 4: When the vacuum cleaner is in the folded state, the unlocking button 12-1 on the outer surface of the handle 12 is pressed to move the moving rod 12-2 disposed in the handle 12 forward, and then the moving rod 12-2 drives the buckle 12-3 to move forward, and releases the engagement with the clamping plate 11-1 disposed in the main body 11. After release, the handle 12 is rotated to completely separate the buckle 12-3 from the main body 11;

[0055] Step 5. When the handle 12 needs to be maintained at the user's desired angle of use, the magnetic switch 101 is turned off, and the resistance value of the magnetoresistor 102 is reduced due to the reduction of the surrounding magnetic force. At this time, the magnetic force of the electromagnetic plate 103 increases, driving the magnetic push block 104 to move under the magnetic repulsion of the electromagnetic plate 103 to overcome the elastic potential energy of the spring 106, and the slide bar 105 makes a corresponding movement so that the positioning tongue 107 enters the positioning node 20. The shaft 5 stops rotating under the constraint of the positioning tongue 107 so that the handle 12 is maintained at the user's desired angle of use.

[0056] Although the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A folding device for a front-folding vacuum cleaner, comprising a body (1) and a vacuum cleaner head (2), wherein the body (1) comprises a main body (11) and a handle (12) rotatably connected to the main body (11), the vacuum cleaner head (2) being arranged at an end of the main body (11) which is not rotatably connected to the handle (12), the main body (11) being provided with a first shaft sleeve (3) at a central position of an end close to the handle (12), the handle (12) being provided with a second shaft sleeve (4) symmetrically distributed on both sides of the first shaft sleeve (3) and coaxial with the first shaft sleeve (3) at an end close to the main body (11), a shaft member (5) partially extending into the first shaft sleeve (3) and rotatable around the axis of the first shaft sleeve (3) being arranged in the second shaft sleeve (4), the two shaft members (5) being plug-fitted, and characterized in that: The outer end of the shaft member (5) is provided with a rotation-stop unit (6), and the outer end of the second sleeve (4) is provided with a rotation-stop point (7), so that the shaft member (5) is prevented from rotating around the axis of the second sleeve (4) through the combination of the rotation-stop unit (6) and the rotation-stop point (7), and when the shaft member (5) rotates around the axis of the first sleeve (3), the second sleeve (4) rotates along with the shaft member (3); A locking unit (8) is provided at the inner end of one of the shaft members (5), and a locking contact (9) is provided at the inner end of the other shaft member (5), so that the locking unit (8) and the locking contact (9) are combined to prevent the two shaft members (5) from separating after plug-in mating, and the shaft members (5) are retained in the corresponding second shaft sleeves (4), while also keeping the first shaft sleeve (3) and the two second shaft sleeves (4) coaxially arranged; A positioning unit (10) which is movable and uses magnetic force as a power source is arranged at the center position of the first sleeve (3), and a plurality of positioning contacts (20) representing different angle values ​​are also arranged at the inner end of the shaft member (5) provided with the locking contact (9), so that the shaft member (5) is prevented from rotating around the axis of the first sleeve (3) through the combination of the positioning unit (10) and the positioning contacts (20), and the state after the angle change is maintained.

2. The front-folding vacuum cleaner according to claim 1, characterized in that: The shaft member (5) comprises a shaft sleeve cover (51) and a shaft body (52); the shaft sleeve cover (51) is internally recessed to form an outer retaining ring (51-1); the outer end of the shaft body (52) is disposed in the recessed area of ​​the shaft sleeve cover (51) and an insertion gap (51-11) is formed between the shaft body (52) and the outer retaining ring (51-1); an inner retaining ring (41) extending outward is disposed on the outer end surface of the second shaft sleeve (4); the inner retaining ring (41) is inserted into the insertion gap (51-11) when the shaft member (5) is disposed on the second shaft sleeve (4); the anti-rotation unit (6) is disposed on the inner end surface of the outer retaining ring (51-1) to be combined with the anti-rotation contact point (7) when the shaft member (5) is disposed on the second shaft sleeve (4).

3. The front-folding vacuum cleaner according to claim 2, characterized in that: The anti-rotation unit (6) includes a plurality of anti-rotation tongues (61) equidistantly distributed along the circumferential direction of the outer retaining ring (51-1); the position and number of the anti-rotation contact points (7) match the anti-rotation tongues (61); the anti-rotation unit (6) includes an inner peripheral surface (71), and an anti-rotation space (72) defined within the inner peripheral surface (71) and allowing the anti-rotation tongues (61) to be placed therein; the inner peripheral surface (71) abuts against the anti-rotation tongues (61) at least in a direction opposite to the insertion direction.

4. The front-folding vacuum cleaner according to claim 2, characterized in that: The inner end of the shaft body (52) of the shaft member (5) provided with the locking unit (8) is provided with a first extension body (52-1), and a rotation cavity (52-11) for the rotation rod (30) to rotate therein is provided between the first extension body (52-1), the shaft body (52), and the shaft sleeve cover (51). The outer end of the rotation rod (30) extends outside the rotation cavity (52-11) and is provided with a gripping handle (301). The inner end is used to provide the locking unit (8) so as to lock the locking unit (8) and the locking contact ( The locking unit (8) is configured to lock the two shaft members (5) by rotating when the two shaft members (5) are combined to prevent the two shaft members (5) from separating. The inner end of the shaft body (52) of the shaft member (5) provided with the locking contact (9) is provided with a second extension body (52-2). The second extension body (52-2) is provided with an insertion cavity (52-21) for the first extension body (52-1) to be inserted therein. The locking contact (9) is provided in the insertion cavity (52-21) so as to be combined with the locking unit (8) when the first extension body (52-1) is inserted into the insertion cavity (52-21).

5. The front-folding vacuum cleaner according to claim 4, characterized in that: The locking unit (8) comprises a locking tongue (81) arranged on the outer peripheral surface of the rotating rod (30); a limiting groove (52-12) is arranged at the inner end of the first extension body (52-1) to allow the locking tongue (81) to extend outside the first extension body (52-1) and limit the rotation angle of the rotating rod (30); and a first guiding channel (52-211) and a second guiding channel (52-212) are arranged on the inner peripheral surface of the insertion cavity (52-21) to guide the locking tongue (81) to reach the locking contact (9) in an assembly direction.

6. The front-folding vacuum cleaner according to claim 4, characterized in that: A mounting seat (40) perpendicular to the first sleeve (3) is arranged at a central position on the outer circumference of the first sleeve (3); a countersunk hole (401) is arranged between the mounting seat (40) and the first sleeve (3); the positioning unit (10) is arranged in the countersunk hole (401) and is movable; a round block (50) matching the position of the positioning unit (10) is arranged on the outer circumference of the second extension body (52-2); a plurality of convex teeth (501) equidistantly distributed along the circumferential direction are arranged on the outer circumference of the round block (50); and the space between two adjacent convex teeth (501) is used as the positioning contact (20).

7. The front-folding vacuum cleaner according to claim 6, characterized in that: The positioning unit (10) comprises a magnetic force controller (101), a magneto-sensitive resistor (102), an electromagnetic plate (103), a magnetic push block (104), a slide bar (105), a spring (106), and a positioning tongue (107); the upper end of the mounting seat (40) is threadedly connected to a seat cover (402); the upper end of the seat cover (402) is formed with an upper mounting groove (402-1) for arranging the magnetic force controller (101) and the magneto-sensitive resistor (102); and the lower end is formed with a magnetic push block (104), a magnetic push block (105), a slide bar (106), a spring (106), and a positioning tongue (107); A lower mounting groove (402-2) is formed for setting the electromagnetic plate (103); the magnetic push block (104) is combined with the slide bar (105) and moves in the countersunk hole (401); the spring (106) is set in the large diameter end of the countersunk hole (401) and one end is supported on the large diameter end of the countersunk hole (401) and the other end is supported on the magnetic push block (104); the positioning tongue (107) is set on the lower end surface of the slide bar (105).

8. The front-folding vacuum cleaner according to claim 7, characterized in that: The magnetic force controller (101) is used to adjust the magnitude of the surrounding magnetic force value. The magnetic sensitive resistor (102) is set to have a larger resistance value when the magnetism is greater and a smaller resistance value when the magnetism is smaller. The magnetic sensitive resistor (102) is used to adjust the magnitude of the current value required by the electromagnetic plate (103). The magnetism of the electromagnetic plate (103) is the same as that of the magnetic push block (104).

9. The front-folding vacuum cleaner according to claim 7, characterized in that: The configuration of the positioning tongue (107) is consistent with the spatial configuration of the positioning contact (20).

10. A folding method using the folding device according to any one of claims 1 to 9, the steps comprising: Step 1: First, combine the main body (11) and the handle (12), so that the two are assembled together through the buckle (12-2) and the clamping plate (11-1), and at this time, the first shaft sleeve (3) is inserted between the two second shaft sleeves (4); Step 2: insert the shaft member (5) provided with a locking contact (9) into the corresponding second sleeve (4), and align the anti-rotation tongue member (61) with the anti-rotation contact point (7) and insert them together with the shaft member (5); then insert the shaft member (5) provided with a locking unit (8) into the corresponding second sleeve (4) and plug and match it with the second extension body (52-2) through the first extension body (52-1), and align the anti-rotation tongue member (61) with the anti-rotation contact point (7) and insert it together with the shaft member (5), so as to complete the preliminary connection of the two shaft members (5) and achieve the purpose of preventing the shaft member (5) from rotating around the axis of the second sleeve (4); Step 3: After the two shaft members (5) are plugged and matched, the rotating rod (30) can be operated. The locking tongue (81) is now at the starting point of the limiting groove (52-12), that is, it matches the position of the first guide channel (52-211). Then, the rotating rod (30) is operated to move along the assembly direction provided by the first guide channel (52-211), so that the locking tongue (81) enters the second guide channel (52-212). Then, the rotating rod (30) is operated to rotate forward 90° to reach the positioning contact (20), so that the locking tongue (81) and the first guide channel (52-211) are misaligned to achieve locking. When the main body (11) and the handle (12) are disassembled, the rotating rod (30) is operated to reverse 90° to unlock. Step 4: When the vacuum cleaner is in a folded state, the unlocking button (12-1) on the outer surface of the handle (12) is pressed to move the moving rod (12-2) disposed in the handle (12) forward, and the moving rod (12-2) drives the buckle (12-3) to move forward, and releases the engagement with the clamping plate (11-1) disposed in the main body (11). After release, the handle (12) is rotated to completely separate the buckle (12-3) from the main body (11); Step 5: When the handle (12) needs to be maintained at the angle of use required by the user, the magnetic switch (101) is turned off, and the resistance value of the magnetoresistor (102) is reduced due to the reduction of the surrounding magnetic force. At this time, the magnetic force of the electromagnetic plate (103) increases, driving the magnetic push block (104) to move under the magnetic repulsion of the electromagnetic plate (103) to overcome the elastic potential energy of the spring (106), and the slide bar (105) makes a corresponding movement so that the positioning tongue (107) enters the positioning node (20). The shaft (5) stops rotating under the constraint of the positioning tongue (107) so that the handle (12) is maintained at the angle of use required by the user.

Images