A multi-functional snow brush

Abstract

The present invention provides a multifunctional snow brush, which includes a grip rod. A brush head is provided at the first end of the grip rod, and a snow shovel head is provided at the second end of the grip rod. The snow shovel head includes a mounting post and a shovel plate integrally connected to the mounting post. A sliding cavity extending along the axial direction of the grip rod is provided inside the mounting post. A piston is hermetically connected in the sliding cavity. The piston is integrally connected to the grip rod through a connecting rod. An elastic member is connected between the mounting post and the grip rod. A variable pressure chamber is formed between the end of the piston away from the grip rod and the sliding cavity. A pressure relief valve connecting the variable pressure chamber to the outside is provided on the mounting post. An electric heating wire is provided at the tip of the shovel plate. A suction channel is formed inside the shovel plate. The input end of the suction channel extends to the tip of the shovel plate, and the output end of the suction channel is communicated with the variable pressure chamber through a delivery channel. A check valve is provided in the delivery channel, and the check valve is used to prevent the fluid in the variable pressure chamber from entering the delivery channel. A battery electrically connected to the electric heating wire is provided inside the grip rod. The present invention can quickly and effectively clean the frozen and hardened snow.

Description

Technical Field

[0001] The present invention relates to the technical field of snow removal devices, and particularly to a multifunctional snow brush. Background Art

[0002] In cold regions, snow falls frequently in winter, causing snow accumulation on roofs, the ground surface, outdoor objects, and cars, bringing many inconveniences to people's lives. Currently, the commonly used snow removal tools are mainly simple tools such as shovels and brooms. However, when the snow freezes and hardens, these tools are difficult to clean quickly and effectively. Summary of the Invention

[0003] To overcome the deficiencies of the prior art, the present invention provides a multifunctional snow brush that can quickly and effectively clean the frozen and hardened snow.

[0004] The present invention adopts the following technical solutions.

[0005] A multifunctional snow brush includes a grip rod. A brush head is provided at the first end of the grip rod, and a shovel head is provided at the second end of the grip rod. The shovel head includes a mounting post and a shovel plate integrally connected to the mounting post.

[0006] A sliding cavity extending along the axial direction of the grip rod is provided in the mounting post. A piston is hermetically connected in the sliding cavity. The piston is integrally connected to the grip rod through a connecting rod. An elastic member is connected between the mounting post and the grip rod. The elastic member makes the mounting post tend to move away from the grip rod. A variable pressure chamber is formed between the end of the piston away from the grip rod and the sliding cavity. A pressure relief valve connecting the variable pressure chamber to the outside is provided on the mounting post. When the pressure in the variable pressure chamber is greater than a threshold value, the pressure relief valve opens.

[0007] An electric heating wire is provided at the tip of the shovel plate. A suction channel is formed in the shovel plate. The input end of the suction channel extends to the tip of the shovel plate. The output end of the suction channel is connected to the variable pressure chamber through a delivery channel. A check valve is provided in the delivery channel. The check valve is used to prevent the fluid in the variable pressure chamber from entering the delivery channel.

[0008] A battery electrically connected to the electric heating wire is provided in the grip rod.

[0009] Furthermore, air supply channels, air guiding channels, and air exhaust channels that are sequentially connected are respectively provided in the grip rod, the connecting rod, and the mounting post. An air inlet hole communicating with the air supply channel is opened on the side wall of the grip rod. A hot air blower is provided in the air supply channel. The hot air blower is electrically connected to the battery.

[0010] Furthermore, a discharge hole communicating with the air exhaust channel is opened at the end of the variable pressure chamber away from the grip rod. A sealing ring capable of closing the discharge hole is integrally connected to the piston. A release hole is opened on the sealing ring. The release hole can communicate with the discharge hole.

[0011] An avoidance groove for accommodating the sealing ring is formed in the installation post.

[0012] Furthermore, a circulation channel communicating with the exhaust passage is provided on the installation post, and a control valve structure is provided in the installation post. The control valve structure has a first state and a second state.

[0013] When the control valve structure is in the first state, the control valve structure connects the suction channel and the delivery channel and blocks the suction channel and the circulation channel.

[0014] When the control valve structure is in the second state, the control valve structure connects the suction channel and the circulation channel and blocks the suction channel and the delivery channel.

[0015] Furthermore, the control valve structure includes a valve cavity formed in the installation post. A valve core is rotatably connected in the valve cavity with damping, and a valve hole is formed in the valve core.

[0016] Furthermore, an extension pipe is detachably connected to the end of the installation post away from the grip rod, and the extension pipe communicates with the exhaust passage.

[0017] Furthermore, the shovel plate includes a plate body. A shovel blade is detachably connected to the end of the plate body away from the installation post. A suction groove is formed at the connection between the shovel blade and the plate body, and a filter sponge is embedded therein.

[0018] The beneficial effects of the present invention are as follows:

[0019] When cleaning the frozen and hardened snow, the user can turn on the heating wire to heat the tip of the shovel plate through the heating wire, so that the snow touched by the tip of the shovel plate melts, which helps to clean the snow.

[0020] In addition, when the shovel plate hits the frozen and hardened snow, the installation post will move towards the direction close to the grip rod, compressing the elastic member between the installation post and the grip rod, playing a role of buffering and shock absorption. In this way, it can not only reduce the damage of the shovel plate caused by hard collision, but also avoid the severe vibration of the grip rod from hurting the user's hand.

[0021] Moreover, during the cleaning process, the user can press the shovel plate against the frozen and hardened snow and repeatedly press the grip rod along the axial direction of the grip rod, so that a reciprocating approaching and separating movement is generated between the grip rod and the installation post. Among them, when the grip rod moves away from the installation post, the piston will move in the direction of increasing the volume of the pressure-changing chamber, reducing the air pressure in the pressure-changing chamber. Under the action of the atmospheric pressure, the accumulated water remaining between the tip of the shovel plate and the snow after the snow melts will be sucked into the pressure-changing chamber. In this way, not only can the heat released by the tip of the shovel plate be prevented from being absorbed by this accumulated water and wasted, but also it can ensure that the tip of the shovel plate continuously contacts and heats the unmelted snow, thereby improving the heat transfer efficiency between the tip of the shovel plate and the snow and accelerating the melting speed of the snow.

[0022] In summary, the present invention can quickly and effectively clean the frozen and hardened snow. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Schematic diagram of the overall structure of this embodiment (the extension pipe is not equipped on the mounting column at this time);

[0025] Figure 2 For Figure 1 Enlarged view of part H of (the control valve structure is in the first state at this time);

[0026] Figure 3 Schematic diagram of the structure of the tip of the shovel plate of this embodiment;

[0027] Figure 4 For Figure 3 Cross-sectional view taken along line J-J of ;

[0028] Figure 5 Schematic diagram of the overall structure of this embodiment (the extension pipe is equipped on the mounting column at this time);

[0029] Figure 6 Schematic diagram of a partial structure of this embodiment (the control valve structure is in the second state at this time).

[0030] Description of the reference numerals:

[0031] Grip rod 1, air supply channel 1a, air inlet hole 1b,

[0032] Brush head 2,

[0033] Shovel head 3,

[0034] Mounting column 31, sliding cavity 31a, transformer chamber 31b, conveying channel 31c, exhaust channel 31d, discharge hole 31e, avoidance groove 31f, circulation channel 31g,

[0035] Shovel plate 32, plate body 321, shovel edge 322, filter sponge 323,

[0036] Suction channel 32a, suction groove 32b,

[0037] Piston 33,

[0038] Receiving rod 34, air guiding channel 34a,

[0039] Elastic member 35, pressure relief valve 36, heating wire 37, check valve 38,

[0040] Sealing ring 39, release hole 39a,

[0041] Battery 4, hot air blower 5,

[0042] Valve core 6, valve hole 6a,

[0043] Extension pipe 7. Specific implementation mode

[0044] The attached drawings are only for illustrative purposes and should not be construed as a limitation to this patent; in order to better illustrate this embodiment, some components in the attached drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product.

[0045] For those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted. The technical solutions of the present invention will be further described below in conjunction with the attached drawings and embodiments.

[0046] A multifunctional snow brush as shown in the attached drawings includes a grip rod 1, a brush head 2 is provided at the first end of the grip rod 1, a shovel head 3 is provided at the second end of the grip rod 1, the shovel head 3 includes a mounting post 31, and a shovel plate 32 integrally connected to the mounting post 31;

[0047] A sliding cavity 31a extending along the axial direction of the grip rod 1 is provided in the mounting post 31, a piston 33 is hermetically connected in the sliding cavity 31a, the piston 33 is integrally connected to the grip rod 1 through a connecting rod 34, an elastic member 35 is connected between the mounting post 31 and the grip rod 1, the elastic member 35 makes the mounting post 31 tend to move away from the grip rod 1, a variable pressure chamber 31b is formed between the end of the piston 33 away from the grip rod 1 and the sliding cavity 31a, a pressure relief valve 36 connecting the variable pressure chamber 31b to the outside is provided on the mounting post 31, and when the pressure in the variable pressure chamber 31b is greater than the threshold value, the pressure relief valve 36 opens;

[0048] A heating wire 37 is provided at the tip of the shovel plate 32, a suction channel 32a is formed in the shovel plate 32, the input end of the suction channel 32a extends to the tip of the shovel plate 32, the output end of the suction channel 32a is communicated with the variable pressure chamber 31b through a delivery channel 31c, and a check valve 38 is provided in the delivery channel 31c, and the check valve 38 is used to prevent the fluid in the variable pressure chamber 31b from entering the delivery channel 31c;

[0049] A battery 4 electrically connected to the heating wire 37 is provided in the grip rod 1.

[0050] In this embodiment, the elastic member 35 is a spring.

[0051] Specifically, when cleaning the frozen and hardened snow, the user can turn on the heating wire 37 to heat the tip of the shovel plate 32 through the heating wire 37, melting the snow touched by the tip of the shovel plate 32, thereby facilitating the cleaning of the snow.

[0052] In addition, when the shovel plate 32 hits the frozen and hardened snow, the mounting post 31 will move towards the direction close to the grip rod 1, compressing the elastic member 35 between the mounting post 31 and the grip rod 1, playing a role in buffering and shock absorption. This can not only reduce the damage of the shovel plate 32 caused by hard collision, but also prevent the grip rod 1 from vibrating violently and hurting the user's hand.

[0053] Furthermore, during the cleaning process, the user can press the shovel plate 32 against the frozen and hardened snow and repeatedly press the grip rod 1 along the axial direction of the grip rod 1. This action will cause a reciprocating approach and separation movement between the grip rod 1 and the mounting post 31. Among them, when the grip rod 1 approaches the mounting post 31, the elastic member 35 is compressed and stores elastic energy. Then, when the user releases the grip rod 1, the elastic member 35 releases the elastic energy, pushing the grip rod 1 away from the mounting post 31, causing the piston 33 to move in the direction of increasing the volume of the pressure-changing chamber 31b, resulting in a decrease in the air pressure in the pressure-changing chamber 31b. Under the action of the atmospheric pressure, the accumulated water remaining between the tip of the shovel plate 32 and the snow after the snow melts will be sucked into the pressure-changing chamber 31b. In this way, not only can the heat released by the tip of the shovel plate 32 be prevented from being absorbed by this accumulated water and wasted, but also it can ensure that the tip of the shovel plate 32 continuously contacts and heats the unmelted snow, thereby improving the heat transfer efficiency between the tip of the shovel plate 32 and the snow and accelerating the melting speed of the snow.

[0054] Preferably, an air supply channel 1a, a wind guiding channel 34a and an air exhaust channel 31d which are sequentially communicated are respectively arranged in the grip rod 1, the receiving rod 34 and the mounting post 31. An air inlet hole 1b communicating with the air supply channel 1a is opened on the side wall of the grip rod 1. A hot air blower 5 is arranged in the air supply channel 1a, and the hot air blower 5 is electrically connected to the battery 4. In this embodiment, the hot air blower 5 is a temperature-adjustable and speed-adjustable hot air blower.

[0055] It can be understood that for scenarios where it is not suitable to use the shovel plate 32, or in order to cooperate with the shovel plate 32 to accelerate the snow cleaning speed, the user can start the hot air blower 5. The hot air blower 5 inhales air through the air inlet hole 1b, and after being heated by the internal heating device, it sequentially passes through the air supply channel 1a, the wind guiding channel 34a and the air exhaust channel 31d, blowing hot air towards the snow, thereby transferring heat to the snow and melting the snow.

[0056] Preferably, a discharge hole 31e communicating with the air exhaust channel 31d is opened at one end of the pressure-changing chamber 31b away from the grip rod 1. A sealing ring 39 capable of closing the discharge hole 31e is integrally connected to the piston 33, and a release hole 39a is opened on the sealing ring 39, and the release hole 39a can communicate with the discharge hole 31e;

[0057] An avoidance groove 31f for accommodating the plugging ring 39 is formed in the installation column 31.

[0058] It can be understood that in order to cooperate with the use of the shovel plate 32 and accelerate the snow cleaning, the user will press the shovel plate 32 tightly against the frozen and hardened snow and repeatedly press the grip rod 1 along the axial direction of the grip rod 1. During this process, a reciprocating displacement will occur between the grip rod 1 and the installation column 31. At the same time, the hot air blower 5 is started, and the hot air flows through the air supply channel 1a, the air guiding channel 34a and the exhaust channel 31d in sequence.

[0059] When the grip rod 1 moves away from the installation column 31, the piston 33 will move in the direction of increasing the volume of the pressure transformation chamber 31b, reducing the air pressure in the pressure transformation chamber 31b. Under the action of the atmospheric pressure, the accumulated water remaining between the tip of the shovel plate 32 and the snow after the snow melts will be sucked into the pressure transformation chamber 31b. During this period, the plugging plate continuously plugs the discharge hole 31e.

[0060] If the amount of accumulated water sucked into the pressure transformation chamber 31b is small, the pressure transformation chamber 31b will suck in air through the suction channel 32a. Then, when the grip rod 1 approaches the installation column 31, the piston 33 will move in the direction of reducing the volume of the pressure transformation chamber 31b, increasing the air pressure in the pressure transformation chamber 31b. However, due to the compressibility of air, the pressure in the pressure transformation chamber 31b at this time is not sufficient to open the pressure relief valve 36. As the air pressure in the pressure transformation chamber 31b continues to increase, the temperature of the air in the pressure transformation chamber 31b rises, causing part of the accumulated water to evaporate into water vapor. Immediately afterwards, when the piston 33 moves to the position where the release hole 39a is communicated with the discharge hole 31e, these water vapors enter the exhaust channel 31d through the discharge hole 31e and are blown towards the snow after being mixed with the hot air in the exhaust channel 31d.

[0061] Compared with hot air, water vapor is more likely to penetrate the snow and remain in the tiny pores and gaps of the snow. When it comes into contact with the relatively cold snow, the water vapor will condense, thereby releasing a large amount of latent heat (i.e., phase change latent heat). This additional heat will be transferred to the snow, further accelerating the melting of ice and snow. Compared with simply blowing hot air, in this embodiment, by combining the action of water vapor, the melting speed of the snow can be more effectively accelerated.

[0062] It can be understood that if the amount of accumulated water sucked into the pressure transformation chamber 31b is large, due to the difficulty of compressing the volume of water, when the piston 33 moves in the direction of reducing the volume of the pressure transformation chamber 31b, the pressure in the pressure transformation chamber 31b will rapidly increase to exceed the set threshold, thereby opening the pressure relief valve 36 and discharging the accumulated water to the outside through the pressure relief valve 36.

[0063] Preferably, a circulation channel 31g communicated with the exhaust channel 31d is provided on the installation column 31, and a control valve structure is provided in the installation column 31. The control valve structure has a first state and a second state;

[0064] When the control valve structure is in the first state, the control valve structure connects the suction channel 32a and the delivery channel 31c, and blocks the suction channel 32a and the circulation channel 31g.

[0065] When the control valve structure is in the second state, the control valve structure connects the suction channel 32a and the circulation channel 31g, and blocks the suction channel 32a and the delivery channel 31c.

[0066] Preferably, the control valve structure includes a valve cavity formed in the mounting post 31. A valve core 6 is rotatably connected in the valve cavity with damping. A valve hole 6a is formed in the valve core 6.

[0067] It can be understood that in a scenario where the shovel plate 32 needs to be used, the user switches the control valve structure to the first state. At this time, the valve hole 6a connects the suction channel 32a and the delivery channel 31c.

[0068] For a scenario where it is not suitable to use the shovel plate 32, the user switches the control valve structure to the second state. At this time, the valve hole 6a connects the suction channel 32a and the circulation channel 31g. In this scenario, the user starts the hot air blower 5 to generate hot air, and the hot air is blown to the snow through the air supply channel 1a, the air guiding channel 34a and the exhaust channel 31d. The hot air transfers heat to the snow, thereby melting the snow. At the same time, the user makes the tip of the shovel plate 32 contact the accumulated water melted from the snow. When the hot air flows through the exhaust channel 31d, a negative pressure effect will be generated, so that the accumulated water is successively sucked into the exhaust channel 31d through the suction channel 32a and the circulation channel 31g, and the accumulated water finally flows onto the unmelted snow.

[0069] It can be understood that the accumulated water can absorb and store part of the heat of the hot air, making its temperature higher than that of the unmelted snow, thus becoming an additional heat source. When this accumulated water contacts the snow, the heat will be transferred from the accumulated water to the snow, thereby accelerating the melting of the snow. In addition, the accumulated water will form a thin water film on the surface of the snow. This water film can more efficiently absorb the heat of the hot air and transfer it to the snow, thereby further accelerating the melting of the snow. In addition, the accumulated water can penetrate into the gaps of the snow and start melting the snow from the inside, making the melting effect more thorough.

[0070] Compared with simply blowing hot air, in this embodiment, by combining the effect of the accumulated water, the melting speed of the snow can be more effectively accelerated.

[0071] Preferably, in order to guide the hot air and the accumulated water and enhance the heat exchange effect between the hot air and the accumulated water, an extension pipe 7 is detachably connected to the end of the mounting post 31 away from the grip 1. The extension pipe 7 is communicated with the exhaust channel 31d. In this embodiment, the extension pipe 7 is in interference fit with the mounting post 31.

[0072] Preferably, to prevent the suction channel 32a from being blocked by fine particles, the shovel plate 32 of this embodiment includes a plate body 321. A shovel blade 322 is detachably connected to one end of the plate body 321 away from the mounting post 31. A suction groove 32b is formed at the connection between the shovel blade 322 and the plate body 321, and a filter sponge 323 is embedded therein. Among them, the input end of the suction groove 32b is the input end of the suction channel 32a. After the user detaches the shovel blade 322 from the plate body 321, the suction groove 32b can be cleaned and the filter sponge 323 can be replaced.

[0073] In this embodiment, the shovel blade 322 and the plate body 321 are connected into a whole by screws.

[0074] It can be understood that in this embodiment, the specific structures of the heating wire 37, the hot air blower 5 and the battery 4, as well as the electrical connection lines between them, are already well known to those skilled in the art, so this specification does not describe them in detail.

[0075] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A multifunctional snow brush, comprising a handle, wherein a brush head is provided at a first end of the handle, wherein: A shovel head is provided at the second end of the grip rod, and the shovel head includes a mounting post and a shovel plate integrally connected to the mounting post; The mounting column is provided with a sliding cavity extending along the axial direction of the grip rod, the sliding cavity is sealed with a piston, the piston is integrally connected to the grip rod through a receiving rod, an elastic member is connected between the mounting column and the grip rod, the elastic member makes the mounting column tend to move away from the grip rod, a variable pressure chamber is formed between the end of the piston away from the grip rod and the sliding cavity, a pressure relief valve connecting the variable pressure chamber with the outside is provided on the mounting column, and when the pressure in the variable pressure chamber is greater than a threshold value, the pressure relief valve opens; The tip of the shovel plate is provided with an electric heating wire, and a suction channel is formed in the shovel plate. The input end of the suction channel extends to the tip of the shovel plate, and the output end of the suction channel is connected to the pressure-changing chamber through the delivery channel. A check valve is provided in the delivery channel, and the check valve is used to prevent the fluid in the pressure-changing chamber from entering the delivery channel; A battery electrically connected to the heating wire is provided in the grip; The grip rod, the receiving rod and the mounting column are respectively provided with an air supply channel, an air guide channel and an air exhaust channel which are connected in sequence. The side wall of the grip rod is provided with an air inlet hole which is connected with the air supply channel. The air supply channel is provided with a hot air blower which is electrically connected with the battery. A discharge hole connected to the exhaust passage is formed at one end of the pressure-changing chamber away from the grip rod, a sealing ring capable of closing the discharge hole is integrally connected to the piston, and a release hole is formed on the sealing ring, and the release hole can be connected to the discharge hole; The mounting column is provided with an avoidance groove for accommodating a blocking ring; The mounting column is provided with a circulation channel connected to the exhaust channel, and the mounting column is provided with a control valve structure, and the control valve structure has a first state and a second state; When the control valve structure is in the first state, the control valve structure connects the suction channel with the delivery channel and blocks the suction channel with the circulation channel; When the control valve structure is in the second state, the control valve structure connects the suction channel with the circulation channel and blocks the suction channel with the delivery channel.

2. A multifunctional snow brush according to claim 1, characterized in that: The control valve structure comprises a valve cavity provided on a mounting column, a valve core is connected in a damping rotation manner in the valve cavity, and a valve hole is provided on the valve core.

3. A multifunctional snow brush according to claim 1, characterized in that: An end of the mounting column away from the grip rod is detachably connected to an extension tube, and the extension tube is communicated with the exhaust passage.

4. A multifunctional snow brush according to claim 1, characterized in that: The shovel plate comprises a plate body, and a shovel blade is detachably connected to one end of the plate body away from the mounting column. A suction groove is formed at the connection between the shovel blade and the plate body, and a filter sponge is embedded therein.

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