Multifunctional snow brush

Abstract

The multifunctional snow brush comprises a holding rod, a brush head is arranged at the first end of the holding rod, a shovel head is arranged at the second end of the holding rod, and the shovel head comprises a mounting column and a shovel plate integrally connected with the mounting column; a sliding cavity extending in the axial direction of the holding rod is formed in the mounting column, a piston is connected into the sliding cavity in a sealed mode, the piston is integrally connected with the holding rod through a bearing rod, an elastic piece is connected between the mounting column and the holding rod, a pressure transformation chamber is formed between the end, away from the holding rod, of the piston and the sliding cavity, and a pressure release valve connected with the pressure transformation chamber and the outside is arranged on the mounting column; an electric heating wire is arranged at the tip end of the shovel plate, a suction channel is formed in the shovel plate, the input end of the suction channel extends to the tip end of the shovel plate, the output end of the suction channel communicates with the transformation chamber through a conveying channel, a check valve is arranged in the conveying channel, and the check valve is used for preventing fluid in the transformation chamber from entering the conveying channel; and a battery electrically connected with the electric heating wire is arranged in the holding rod. The snow cleaning device can quickly and effectively clean frozen and hardened accumulated snow.

Description

Technical Field

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

[0002] Cold regions often experience snowfall in winter, which causes snow to accumulate on roofs, ground surfaces, outdoor objects, and cars, causing many inconveniences in people's lives. Currently, the common snow removal tools used by people 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] In order to overcome the deficiencies of the prior art, the present invention provides a multifunctional snow brush, which can quickly and effectively clean the icy and hardened snow.

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

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

[0006] 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;

[0007] 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;

[0008] A battery electrically connected to the heating wire is arranged in the grip.

[0009] Furthermore, 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. A hot air blower is provided in the air supply channel, and the hot air blower is electrically connected with the battery.

[0010] Furthermore, a discharge hole connected to the exhaust passage is provided 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 provided on the sealing ring, and the release hole can be connected to the discharge hole;

[0011] An avoidance groove for accommodating a blocking ring is provided in the installation column.

[0012] Furthermore, a circulation channel connected to the exhaust channel is provided on the mounting column, and a control valve structure is provided in the mounting column, and 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 with the delivery channel and blocks the suction channel with the circulation channel;

[0014] 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.

[0015] Furthermore, the control valve structure includes a valve cavity opened on the mounting column, a valve core is connected to the valve cavity in a damping rotation manner, and a valve hole is opened on the valve core.

[0016] Furthermore, 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.

[0017] Furthermore, the shovel plate includes 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.

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

[0019] When clearing frozen and hardened snow, the user can turn on the heating wire to heat the tip of the shovel blade through the heating wire, so that the snow touched by the tip of the shovel blade melts, thereby facilitating the clearing of the snow.

[0020] In addition, when the shovel hits the frozen snow, the mounting post will move towards the handle, compressing the elastic part between the mounting post and the handle to play a role in buffering and shock absorption. This can not only reduce the damage to the shovel caused by hard collision, but also prevent the handle from vibrating violently and injuring the user's hand.

[0021] Furthermore, during the cleaning process, the user can press the shovel blade against the frozen and hardened snow, and repeatedly press the handle along the axial direction of the handle, so that the handle and the mounting column produce a reciprocating approaching and moving away movement. When the handle is away from the mounting column, the piston will move in the direction of increasing the volume of the transformer chamber, so that the air pressure in the transformer chamber is reduced. Under the action of atmospheric pressure, the accumulated water remaining between the tip of the shovel blade and the snow after the snow melts will be sucked into the transformer chamber. In this way, not only can the heat released by the tip of the shovel blade be avoided from being absorbed by the accumulated water and causing waste, but it can also ensure that the tip of the shovel blade continues to contact and heat the unmelted snow, thereby improving the heat transfer efficiency between the tip of the shovel blade and the snow and accelerating the melting of the snow.

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

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the overall structure of this embodiment (the mounting column is not equipped with an extension tube at this time);

[0025] Figure 2 for Figure 1 An enlarged view of the H portion (the control valve structure is in the first state at this time);

[0026] Figure 3 This is a schematic diagram of the structure of the shovel plate tip of this embodiment;

[0027] Figure 4 for Figure 3 JJ sectional view;

[0028] Figure 5 This is a schematic diagram of the overall structure of this embodiment (the mounting column is equipped with an extension tube at this time);

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

[0030] Description of reference numerals:

[0031] Handle 1, air supply channel 1a, air inlet 1b,

[0032] Brush head 2,

[0033] Shovel head 3,

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

[0035] Shovel plate 32, plate body 321, scraper blade 322, filter sponge 323,

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

[0037] Piston 33,

[0038] The receiving rod 34, the air guide channel 34a,

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

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

[0041] Battery 4, Heater 5,

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

[0043] Extension tube 7. DETAILED DESCRIPTION

[0044] The drawings are only used for illustrative purposes and should not be construed as limitations of this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product.

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

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

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

[0048] The tip of the shovel plate 32 is provided with a heating wire 37, and 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, and the output end of the suction channel 32a is connected to the pressure-changing chamber 31b through the delivery channel 31c. A check valve 38 is provided in the delivery channel 31c, and the check valve 38 is used to prevent the fluid in the pressure-changing chamber 31b from entering the delivery channel 31c.

[0049] A battery 4 electrically connected to the heating wire 37 is disposed in the handle 1 .

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

[0051] Specifically, when clearing 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 to melt the snow touched by the tip of the shovel plate 32, thereby facilitating the clearing of the snow.

[0052] In addition, when the shovel blade 32 hits the frozen and hardened snow, the mounting post 31 will move towards the handle 1, compressing the elastic member 35 between the mounting post 31 and the handle 1, thus playing a role of buffering and shock absorption. This can reduce the damage of the shovel blade 32 caused by hard collision and prevent the handle 1 from vibrating violently and injuring 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 1 along the axial direction of the grip 1. This action will cause the grip 1 to move back and forth with the mounting post 31. When the grip 1 approaches the mounting post 31, the elastic member 35 is compressed and stores elastic energy. Then, when the user releases the grip 1, the elastic member 35 releases elastic energy, pushing the grip 1 away from the mounting post 31, so that the piston 33 moves in the direction of increasing the volume of the variable pressure chamber 31b, resulting in a decrease in the air pressure in the variable pressure chamber 31b. Under the action of 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 variable pressure chamber 31b. In this way, not only can the heat released by the tip of the shovel plate 32 be avoided from being absorbed by the accumulated water and causing waste, but it can also ensure that the tip of the shovel plate 32 continues to contact and heat 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, the grip bar 1, the receiving bar 34 and the mounting column 31 are respectively provided with an air supply channel 1a, an air guide channel 34a and an exhaust channel 31d which are connected in sequence, the side wall of the grip bar 1 is provided with an air inlet hole 1b which is connected with the air supply channel 1a, and a hot air blower 5 is provided in the air supply channel 1a, and the hot air blower 5 is electrically connected with the battery 4. In this embodiment, the hot air blower 5 is a hot air blower with adjustable temperature and speed.

[0055] It is understandable that for scenes where the shovel board 32 is not suitable, or in order to cooperate with the shovel board 32 to speed up the snow clearing speed, the user can start the hot air blower 5. The hot air blower 5 inhales air through the air inlet 1b, and after being heated by the internal heating device, the hot air is blown toward the snow through the air supply channel 1a, the air guide channel 34a and the exhaust channel 31d in sequence, thereby transferring heat to the snow and melting the snow.

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

[0057] An escape groove 31 f for accommodating the blocking ring 39 is defined in the mounting column 31 .

[0058] It is understandable that in order to cooperate with the shovel board 32 to speed up the snow clearing, the user will press the shovel board 32 against the frozen and hardened snow, and repeatedly press the handle 1 along the axial direction of the handle 1. In this process, the handle 1 and the mounting column 31 will have a reciprocating displacement. At the same time, the hot air blower 5 is started, and the hot air flows through the air supply channel 1a, the air guide channel 34a and the exhaust channel 31d in sequence.

[0059] When the handle 1 moves away from the mounting column 31, the piston 33 will move in the direction of increasing the volume of the variable pressure chamber 31b, so that the air pressure in the variable pressure chamber 31b decreases. Under the action of atmospheric pressure, the accumulated water between the tip of the shovel plate 32 and the snow after the snow melts will be sucked into the variable pressure chamber 31b. During this period, the blocking plate continues to block the discharge hole 31e.

[0060] If the amount of accumulated water sucked into the transformer chamber 31b is small, the transformer chamber 31b will suck air through the suction channel 32a. Then, when the handle 1 approaches the mounting column 31, the piston 33 will move in the direction of reducing the volume of the transformer chamber 31b, thereby increasing the air pressure in the transformer chamber 31b. However, in view of the compressibility of air, the pressure in the transformer chamber 31b is not enough to open the pressure relief valve 36 at this time. As the air pressure in the transformer chamber 31b continues to increase, the air temperature in the transformer chamber 31b rises, causing part of the accumulated water to evaporate into water vapor. Next, when the piston 33 moves to the position where the release hole 39a is connected to the discharge hole 31e, the water vapor enters the exhaust channel 31d through the discharge hole 31e, mixes with the hot air in the exhaust channel 31d, and blows toward the snow.

[0061] Compared with hot air, water vapor can more easily penetrate snow and stay in the tiny pores and cracks of the snow. When it comes into contact with the lower temperature snow, water vapor will condense, thereby releasing a large amount of latent heat (i.e., phase change latent heat). This extra heat will be transferred to the snow, further accelerating the melting of ice and snow. Compared with simply blowing hot air, this embodiment can more effectively accelerate the melting of snow by combining the effect of water vapor.

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

[0063] Preferably, a circulation channel 31g communicating with the exhaust channel 31d is provided on the mounting column 31, and a control valve structure is provided inside the mounting column 31, and 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 with the delivery channel 31c, and blocks the suction channel 32a from the circulation channel 31g;

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

[0066] Preferably, the control valve structure includes a valve cavity opened on the mounting column 31 , a valve core 6 is connected in a damping rotation manner in the valve cavity, and a valve hole 6 a is opened on the valve core 6 .

[0067] It is understandable that in a scenario where the shovel plate 32 is needed, the user switches the control valve structure to the first state, at which time the valve hole 6a connects the suction channel 32a and the delivery channel 31c.

[0068] For scenarios where the shovel plate 32 is not suitable, the user switches the control valve structure to the second state, at which 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 finally blows the hot air to the snow through the air supply channel 1a, the air guide 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 touches the tip of the shovel plate 32 to the accumulated water formed by the melted snow. When the hot air flows through the exhaust channel 31d, a negative pressure effect is generated, thereby sucking the accumulated water into the exhaust channel 31d in turn through the suction channel 32a and the circulation channel 31g, so that the accumulated water eventually flows onto the unmelted snow.

[0069] It is understandable 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 the accumulated water comes into contact with 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 also form a thin layer of water film on the surface of the snow, which 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 also penetrate into the cracks in the snow and begin to melt the snow from the inside, making the melting effect more thorough.

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

[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, the end of the mounting column 31 away from the grip 1 is detachably connected with an extension tube 7, and the extension tube 7 is connected to the exhaust channel 31d. In this embodiment, the extension tube 7 and the mounting column 31 are sleeved by interference.

[0072] Preferably, in order to prevent the suction channel 32a from being blocked by fine particles, the shovel plate 32 of this embodiment includes a plate body 321, and a shovel blade 322 is detachably connected to one end of the plate body 321 away from the mounting column 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 removes 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 scraper blade 322 and the plate body 321 are connected as a whole by screws.

[0074] It is understandable 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 circuits therebetween, are well known to those skilled in the art, and therefore are not described in detail in this specification.

[0075] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled 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 list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should 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 arranged in the grip.

2. A multifunctional snow brush according to claim 1, characterized in that: The grip rod, receiving rod and 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. A hot air blower is arranged in the air supply channel, and the hot air blower is electrically connected with a battery.

3. A multifunctional snow brush according to claim 2, characterized in that: 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; An avoidance groove for accommodating a blocking ring is provided in the installation column.

4. A multifunctional snow brush according to claim 3, characterized in that: 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.

5. A multifunctional snow brush according to claim 4, 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.

6. A multifunctional snow brush according to claim 2 or 4, 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.

7. The 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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