Ground pressure adjusting mechanism for brush of scrubber
Through the floor scrubber brush pressure adjustment mechanism composed of compression spring and tensile spring, the problem of the pressure in traditional floor scrubber cannot be adjusted on soft and rough ground is solved, and the pressure adjustment and cleaning efficiency are improved.
Patent Information
- Application Number
- CN202422184572.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-06
AI Technical Summary
Traditional floor scrubber brushes cannot adjust pressure on soft and rough ground, resulting in ground damage or low cleaning efficiency.
A floor scrubber brush pressure adjustment mechanism is designed, and the brush pressure adjustment is achieved by using a structure composed of a compression spring and a tensile spring. The lifting push rod and the bracket connecting rod are driven by the motor, and combined with the spring's expansion and contraction, the pressure adjustment range of 10-80Kg is achieved.
Pressure adjustment on soft and rough ground is achieved, cleaning efficiency is improved, motor overload is avoided, and cleaning ability of stubborn stains is enhanced.
Smart Images
Figure CN223041471U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a pressure regulating mechanism, in particular to a ground pressure regulating mechanism for the brush of a floor washer. Background Art
[0002] There are usually two types of ground pressures for the brushes of traditional floor washers:
[0003] The first one is the most common, which is to press on the ground by the self-weight of the brush device (for example, if the self-weight of the brush device is 40 Kg, then the ground pressure of the brush is a constant 40 Kg). This method has a simple structure and low cost, but it has two disadvantages: one is that on some relatively soft and rough ground, since the pressure of the brush device cannot be reduced, the working current of the brush is too large, which is likely to cause ground damage or motor overload. The other is that when facing some stubborn stains, due to the lack of a pressurizing device, the cleaning efficiency is reduced.
[0004] The second one is a floor washer with a pressurizing device for the brush device. This type of floor washer can apply an additional pressure on the basis of the self-weight of the brush, making the ground cleaning cleaner. However, this method also cannot cope with some relatively soft and rough ground. This method cannot make the ground pressure of the brush lower than its self-weight (for example, if the self-weight of the brush is 40 Kg and the additional pressure is 40 Kg, then the ground pressure range of the brush is 40 - 80 Kg). Content of the Utility Model
[0005] Aiming at the deficiencies of the prior art, the utility model provides a ground pressure regulating mechanism for the brush of a floor washer, which can realize pressure regulation within a certain range, so that it can clean on relatively soft and rough ground, and can also clean stubborn stains and improve the cleaning efficiency.
[0006] To achieve the above technical solution, the utility model provides a ground pressure regulating mechanism for the brush of a floor washer, including: a top fixed bracket, a lifting push rod, a lifting bracket, a bracket connecting rod, a tension spring, a side fixed bracket, a second lifting rod, a compression spring, a first lifting rod and a brush device. Among them, the brush device is installed at the bottom of the lifting bracket. The lifting bracket is hinged to the side fixed bracket through the bracket connecting rod. The right end of the first lifting rod is hinged to the side fixed bracket, and the left end of the first lifting rod is hinged to the bottom of the lifting push rod. The top of the lifting push rod is hinged and fixed to the top fixed bracket. The right end of the second lifting rod is aligned with the right end of the first lifting rod and then hinged to the side fixed bracket together. The left end of the second lifting rod is connected to the lifting bracket through a tension spring. A compression spring is connected between the left ends of the first lifting rod and the second lifting rod.
[0007] Preferably, the brush device is installed below the lifting bracket and is driven by a motor.
[0008] Preferably, the brush device is a roller brush system composed of a single or multiple brush rollers, or a disc brush system composed of a single or multiple disc brushes.
[0009] Preferably, the lifting bracket is hinged to the side fixed bracket via four bracket connecting rods distributed in a parallelogram.
[0010] Preferably, the lifting push rod is driven by a motor.
[0011] The utility model provides a floor scrubber brush-to-ground pressure regulating mechanism with beneficial effects in that: the floor scrubber brush-to-ground pressure regulating mechanism has a simple structure, reasonable design, and convenient operation, and can achieve pressure regulation within a certain range. The core of the utility model is composed of a compression spring and a tension spring and their corresponding structures. The compression spring realizes the upward support force, and the tension spring realizes the downward pressure. The utility model can not only achieve additional pressure, but also the brush-to-ground pressure can achieve a pressure less than the gravity of the brush device. For example, when the brush device has a deadweight of 40Kg, the maximum pressure of the compression spring is 30Kg, and the maximum tension of the tension spring is 40Kg, the system can achieve a pressure regulation range of 10-80Kg, so that it can clean relatively soft and rough floors, as well as stubborn stains, and improve cleaning efficiency. In combination with the pressure regulation control method, relatively constant power cleaning under different gears can also be achieved, which can avoid motor overload while having better cleaning ability. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the brush device of the utility model when it is off the ground.
[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the brush device of the utility model when it contacts the ground.
[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the brush device of the utility model when the bristles are slightly deformed.
[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the brush device of the utility model when the bristles are deformed in large quantities.
[0016] In the figure: 1. Top fixed bracket; 2. Lifting push rod; 3. Lifting bracket; 4. Bracket connecting rod; 5. Tension spring; 6. Side fixed bracket; 7. Second lifting rod; 8. Compression spring; 9. First lifting rod; 10. Brush device. DETAILED DESCRIPTION
[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0018] Embodiment: A ground pressure adjustment mechanism for the brush of a floor washer.
[0019] Refer to Figures 1 to 4 As shown, a ground pressure adjustment mechanism for the brush of a floor washer includes: a top fixed bracket 1, a lifting push rod 2, a lifting bracket 3, a bracket connecting rod 4, a tension spring 5, a side fixed bracket 6, a second lifting rod 7, a compression spring 8, a first lifting rod 9, and a brush device 10. Among them, the brush device 10 is installed at the bottom of the lifting bracket 3. The brush device 10 is a roller brush system composed of two brush rollers, and a driving motor is correspondingly installed on each brush roller. During actual operation, the brush rollers can be driven by the motor to rotate, and the ground can be cleaned by the bristles on the brush rollers. The lifting bracket 3 is hinged to the side fixed bracket 6 through four bracket connecting rods 4 distributed in a parallelogram, which can make the lifting bracket 3 move up and down relative to the side fixed bracket 6. The right end of the first lifting rod 9 is hinged to the side fixed bracket 6, and the left end of the first lifting rod 9 is hinged to the bottom of the lifting push rod 2. The top of the lifting push rod 2 is hinged and fixed to the top fixed bracket 1. The lifting push rod 2 is a worm and worm gear driven by a motor and arranged vertically downward. The right end of the second lifting rod 7 is aligned with the right end of the first lifting rod 9 and then hinged to the side fixed bracket 6 together. The left end of the second lifting rod 7 is connected to the lifting bracket 3 through a tension spring 5. A compression spring 8 is connected between the left ends of the first lifting rod 9 and the second lifting rod 7.
[0020] The working principle of the present invention is as follows:
[0021] Refer to Figure 1 As shown, Figure 1 is the non-working state of the present invention:
[0022] (1) In the non-working state, the lifting push rod 2 is in the non-extended state, and the brush device 10 is off the ground.
[0023] (2) The brush device 10 is installed on the lifting bracket 3, and the lifting bracket 3 is hinged to the side fixed bracket 6 through the bracket connecting rod 4.
[0024] (3) The positions of the top fixed bracket 1 and the side fixed bracket 6 are both in a fixed state and will not change their positions due to the lifting of the brush device 10.
[0025] (4) One end of the lifting push rod 2 is hinged to the top fixed bracket 1, and the other end is hinged to the first lifting rod 9.
[0026] (5) In the non-working state, the lifting push rod 2 is in the non-extended state, so that the first lifting rod 9 remains in the raised position.
[0027] (6) The compression spring 8 is placed between the first lifting rod 9 and the second lifting rod 7.
[0028] (7) In the non-working state, since the brush device 10 is off the ground, the brush device 10 and the lifting bracket 3 are supported by gravity on the second lifting rod 7.
[0029] (8) The second lifting rod 7 transmits the force to the first lifting rod 9 through the compression spring 8. Due to the action of gravity, the compression spring 8 is in a compressed state at this time.
[0030] (9) There is a tension spring 5 connecting the lifting bracket 3 and the second lifting rod 7. In the state where the brush device 10 is off the ground, the tension spring 5 is in the non-stretched state.
[0031] Refer to Figure 2 as shown in Figure 2 is the state when the lifting push rod starts to descend after the present utility model is powered on and the brush device just touches the ground:
[0032] (1) After receiving the work instruction, the motor of the brush device 10 starts to work, and at the same time, the lifting push rod 2 starts to descend.
[0033] (2) Before the bristles in the brush device 10 touch the ground during the descent, since the ground has not yet generated a reverse supporting force on the brush device 10, the compression spring 8 is still in the compressed state and the tension spring 5 is still in the non-stretched state.
[0034] (3) After the brush device 10 touches the ground, the lifting push rod 2 continues to descend. At this time, the pressure of the brush device 10 on the ground will increase, the ground will start to generate a reverse supporting force on the brush device 10, and the gravity of the brush device 10 will decrease.
[0035] (4) When the gravity of the brush device 10 is less than the pressure of the compression spring 8, the compression spring 8 will start to extend.
[0036] (5) Until the compression spring 8 extends to the limit length, at this time, all the pressure of the brush device 10 is pressed on the ground.
[0037] Function of the compression spring 8: Without the compression spring 8, after the brush device 10 touches the ground, the self-weight of the brush device 10 will be fully pressed on the ground within a very short distance. (Because the deformation of the bristles when the weight of the brush presses on the ground is usually very small). Due to the absence of the compression spring 8, under the action of the working inertia of the motor, the entire self-weight of the brush device 10 will be directly pressed on the ground. For example, if the weight of the brush device 10 is 40 Kg, then either the pressure of the brush device 10 on the ground is 0, or the pressure of the brush device 10 on the ground directly reaches 400 N. It is very difficult to achieve a pressure less than 400 N. On some rough ground, even if the self-weight of the brush device 10 presses on the ground, the motor may be damaged due to too much friction, accelerating the wear of the brush device 10. With the compression spring 8, after the brush device 10 starts to touch the ground, when the supporting weight is less than the pressure of the compression spring 8, the compression spring 8 will gradually release the pressure to the brush device 10 as the stroke increases. During this process, the pressure of the brush device 10 on the ground can be made less than the self-weight of the brush device 10. For example, if the weight of the brush device 10 is 40 Kg, the pressure of the compression spring 8 in the compressed state is 300 N, and the pressure in the extended state is 50 N. After the brush device 10 touches the ground and the pressure on the ground is greater than 10 Kg, the compression spring 8 will start to extend. At this time, if the current of the motor of the brush device 10 has reached the set current value, the lifting push rod 2 stops descending. Even if the lifting push rod 2 has inertia, due to the sufficient telescopic stroke of the compression spring 8, the sudden increase in the pressure on the ground can be effectively reduced. The pressure of the brush device 10 on the ground can be adjusted between 100 - 400 N.
[0038] Refer to Figure 3 as shown Figure 3 It is the state where the lifting push rod 2 continues to descend and the compression spring 8 extends after the brush device 10 touches the ground.
[0039] (1) Starting from Figure 2 when the bristles in the brush device 10 touch the ground and before the compression spring 8 extends, at this time, the pressure of the brush device 10 on the ground is the gravity of the brush device 10 minus the pressure when the spring is compressed by 8.
[0040] (2) When the lifting push rod 2 continues to descend and the spring compression 8 starts to extend, during this process, the pressure of the brush device 10 on the ground gradually increases. The pressure of the brush device 10 on the ground is the gravity of the brush device 10 minus the pressure corresponding to the length of the spring compression 8.
[0041] (3) One end of the first lifting rod 9 and the second lifting rod 7 is hinged and can rotate relative to each other. There is a limit groove at the other end, so that the rotation angle is limited within a certain range.
[0042] (4) When the compressed spring 8 is completely released, the first lifting rod 9 rotates by an angle to reach the lower limit position of the second lifting rod 7. At this time, all the pressure of the brush device 10 is applied to the ground, and the bristles are slightly deformed automatically by the pressure of the brush device 10.
[0043] (5) If the lifting push rod 2 continues to descend, since the first lifting rod 9 rotates to reach the lower limit position of the second lifting rod 7, it will drive the second lifting rod 7 to move downward. When the second lifting rod 7 moves downward, the tension spring 5 will be stretched, applying an additional pressure to the ground.
[0044] Refer to Figure 4 as shown in Figure 4 When the lifting push rod 2 is fully extended, the tension spring 5 elongates, and the system generates the maximum pressure state.
[0045] (1) After the compressed spring 8 is completely released, the first lifting rod 9 drives the second lifting rod 7 to descend under the drive of the limit.
[0046] (2) Since the gravity of the brush device 10 has been fully applied to the ground, when the second lifting rod 7 descends, due to the supporting force of the bristles, it will be difficult for the lifting bracket 3 to descend, and at this time the tension spring 5 is stretched.
[0047] (4) The pulling force of the tension spring 5 is applied to the lifting bracket 3, which is converted into an additional pressure on the brush device 10. Due to the additional downward pressure on the brush device 10, the deformation amount of the bristles will increase, the cleaning effect will be further enhanced, and at the same time the power consumption will further increase.
[0048] The ground pressure adjustment mechanism of the floor washer brush has a simple structure, reasonable design, and convenient operation, and can achieve pressure adjustment within a certain range. The core of the present utility model consists of a compressed spring 8, a tension spring 5 and their corresponding structures. The compressed spring 8 realizes the upward supporting force, and the tension spring 5 realizes the downward pressure. The present utility model can not only achieve additional extra pressure, but also the ground pressure of the brush can achieve a pressure less than the gravity of the brush device 10. For example, when the self-weight of the brush device 10 is 40 Kg, the maximum pressure of the compressed spring 8 is 30 Kg, and the maximum pulling force of the tension spring 5 is 40 Kg, the system can achieve a pressure adjustment range of 10 - 80 Kg, enabling it to clean on relatively soft and rough ground, as well as clean stubborn stains, and improve the cleaning efficiency. Combined with the pressure adjustment control method, it can also achieve relatively constant power cleaning at different gears, avoiding motor overload while having better cleaning ability.
[0049] The above is the preferred embodiment of the present utility model, but the present utility model should not be limited to the content disclosed in this embodiment and the drawings. Therefore, all equivalent or modified implementations completed without departing from the spirit disclosed by the present utility model fall within the protection scope of the present utility model.
Claims
1. A floor scrubber brush-to-ground pressure adjustment mechanism, characterized in that include: A top fixed bracket, a lifting push rod, a lifting bracket, a bracket connecting rod, a tension spring, a side fixed bracket, a second lifting rod, a compression spring, a first lifting rod and a brush device, wherein the brush device is installed at the bottom of the lifting bracket, the lifting bracket is hinged to the side fixed bracket through the bracket connecting rod, the right end of the first lifting rod is hinged to the side fixed bracket, the left end of the first lifting rod is hinged to the bottom of the lifting push rod, the top of the lifting push rod is hinged and fixed to the top fixed bracket, the right end of the second lifting rod is aligned with the right end of the first lifting rod and then hinged to the side fixed bracket, the left end of the second lifting rod is connected to the lifting bracket through a tension spring, and the left ends of the first lifting rod and the second lifting rod are connected through a compression spring.
2. The brush-to-ground pressure adjustment mechanism for a floor scrubber according to claim 1, characterized in that: The brush device is installed below the lifting bracket and is driven by a motor.
3. The floor scrubber brush-to-ground pressure regulating mechanism according to claim 1, characterized in that: The brush device is a roller brush system composed of a single or multiple brush rollers, or a disc brush system composed of a single or multiple disc brushes.
4. The brush-to-ground pressure regulating mechanism for a floor scrubber according to claim 1, characterized in that: The lifting bracket is hinged to the side fixed bracket through four bracket connecting rods distributed in a parallelogram.
5. The floor scrubber brush-to-ground pressure regulating mechanism according to claim 1, characterized in that: The lifting push rod is driven by a motor.