Snow blower

Abstract

The present disclosure provides a snow blower including a shaft configured to rotate about a first axis, a first auger connected to the shaft, an intake housing configured to receive at least a portion of the shaft, and a scraping assembly attached to the intake housing, the scraping assembly including a bottom edge configured to contact the ground, the bottom edge being disposed forward of the first axis.

Description

[Technical Field]

[0001] FIELD OF THE INVENTION This application relates to the technical field of outdoor power equipment, such as snow blowers. [Background technology]

[0002] With the continuous advancement of society, outdoor work is generally performed using various outdoor power equipment. As outdoor power equipment, snow blowers are widely used for snow removal. When it snows, snow blowers are used in outdoor environments to clear snow from sidewalks, driveways, paved roads, and other surfaces. When a snow blower encounters a large snowdrift along a road during use, the front of the snow blower may lift off the ground, making it difficult to remove much of the snow. This is uncomfortable and inconvenient for many users and reduces snow removal efficiency. Summary of the Invention

[0003] The snow blower includes a shaft configured to rotate about a first axis, a first auger (spiral blade) connected to the shaft, an intake housing configured to receive at least a portion of the shaft, and a scraping assembly attached to the intake housing, the scraping assembly having a bottom edge configured to contact the ground, the bottom edge being positioned forward of the first axis.

[0004] In one example, the intake housing has a first sidewall and a second sidewall opposite the first sidewall, and the first sidewall and the second sidewall together substantially define a front end and a rear end of the intake housing.

[0005] In one example, the first sidewall has a first leading edge and the second sidewall has a second leading edge, at least a portion of the first leading edge sloping rearwardly to a top of the intake housing.

[0006] In one example, the scraping assembly is attached to the intake housing along a second axis, and a ratio of the front-to-back distance from the front end to the rear end to the front-to-back distance from the front end to the second axis is greater than or equal to 0 and less than or equal to 0.5.

[0007] In one example, the scraping assembly is fixedly attached to the intake housing using a first fastening member and a second fastening member, the first fastening member and the second fastening member being disposed along the second axis.

[0008] In one example, the front-to-rear distance from the bottom edge to the rear end is longer than the front-to-rear distance from the first axis to the rear end.

[0009] In one example, the front-to-rear distance from the bottom edge to the front end is shorter than the front-to-rear distance from the first axis to the front end.

[0010] In one example, the scraping assembly includes a scraping surface that is angled with the ground at an angle between 0 and 30 degrees.

[0011] In one example, the scraping assembly includes an integrated scraping plate.

[0012] In one example, the first auger has a first outer edge configured to contact the snow before the intake housing contacts the snow.

[0013] In one example, a second auger is connected to the shaft, the first auger and the second auger are positioned on the shaft along different axial positions, and the second auger has a second outer edge configured to contact the snow before the intake housing contacts the snow.

[0014] In one example, the snow blower includes a support member connected to the intake housing, the support member configured to elevate the intake housing from the ground and selectively contact the ground with a first material or a second material.

[0015] In one example, the support member has a support state and a storage state, and when the support member is in the support state, the first material is selected to contact the ground, and when the support member is in the storage state, the second material is selected to contact the ground.

[0016] In one example, the first material is a metal material and the second material is a plastic material.

[0017] In one example, at least a portion of the support member is movably connected to the intake housing.

[0018] The snow blower includes a shaft configured to rotate about an axis, a first auger connected to the shaft, an intake housing configured to receive at least a portion of the shaft, a scraping assembly attached to the intake housing, and a housing enclosing a center of gravity of the shaft, the first auger, the intake housing, and the scraping assembly, the first auger having a first inner edge defining a first inner periphery, the center of gravity being located within the first inner periphery, and the scraping assembly including a bottom edge configured to contact the ground, the bottom edge being located forward of the center of gravity.

[0019] The snow blower includes a shaft configured to rotate about the first axis, the first auger connected to the shaft, the intake housing configured to receive at least a portion of the shaft, a wheel assembly configured to rotate about a wheel axis, and a scraping assembly attached to the intake housing, the scraping assembly including a bottom edge configured to contact the ground, wherein a ratio of a longitudinal distance from the bottom edge to the wheel axis to a longitudinal distance from the first axis to the wheel axis is greater than or equal to 1 and less than or equal to 1.5.

[0020] In one example, the intake housing has a first sidewall and a second sidewall opposite the first sidewall, the first sidewall and the second sidewall defining a front end and a rear end of the intake housing.

[0021] In one example, the front-to-rear distance from the bottom edge to the rear end is longer than the front-to-rear distance from the center of gravity to the rear end.

[0022] In one example, the front-to-rear distance from the bottom edge to the front end is shorter than the front-to-rear distance from the center of gravity to the front end.

[0023] The snow blower includes a handle assembly attached to a main body and a temperature regulation assembly configured to regulate a temperature of the handle assembly. The handle assembly includes a first grip configured to be held by a user and a first trigger movably cooperating with the first grip. The first trigger includes a first heating portion and a remaining portion, the first heating portion having a better heat transfer capability than the remaining portion. The first trigger has a cooperative state, and when the first trigger is in the cooperative state, at least a portion of the first trigger extends along a first plane, and a ratio of a projected area of ​​the first heating portion on the first plane to a projected area of ​​the first grip on the first plane is greater than 0 and less than or equal to 1.

[0024] In one example, the ratio of the width of the projected area of ​​the first heating portion on the first plane to the width of the projected area of ​​the first grip on the first plane is greater than 0 and less than or equal to 1.

[0025] In one example, a ratio of the projected area of ​​the first heating portion on the first plane to the projected area of ​​the first trigger on the first plane is greater than 0 and less than or equal to 1.

[0026] In one example, the first trigger extends substantially curvilinearly in the direction of the width of the first trigger, and the ratio of the width of the first trigger to the depth of the first trigger is 1 or more and 6 or less.

[0027] In one example, the first grip is substantially cylindrical and the diameter of the first grip is greater than or equal to 15 mm and less than or equal to 50 mm.

[0028] In one example, the thickness of the first trigger is equal to or greater than 2 mm and equal to or less than 6 mm.

[0029] In one example, the first trigger is comprised of a first material and a second material.

[0030] In one example, the first material is a metal material and the second material is a plastic material.

[0031] In one example, the first trigger is made of a material having a thermal conductivity of 1 W / mK or more and 450 W / mK or less.

[0032] In one example, the first trigger includes a first recess, the first grip includes a first protrusion, and the first recess is configured to receive the first protrusion.

[0033] In one example, the first trigger has a first trigger surface, and when the first trigger is in the cooperative state, the first protrusion projects onto substantially the same surface as the first trigger surface.

[0034] In one example, the first protrusion protrudes from the first grip by a distance of 10 mm or less.

[0035] In one example, the temperature regulation assembly includes a first resistance wire configured to heat the first grip, the first resistance wire being wrapped around the inside of the first grip.

[0036] In one example, the handle assembly includes a second grip configured to be held by a user and a second trigger movably cooperating with the second grip, the second trigger including a second heating portion, the second trigger having a cooperating state, when the second trigger is in the cooperating state, at least a portion of the second trigger extends along a second plane, and a ratio of a projected area of ​​the second heating portion on the second plane to a projected area of ​​the second grip on the second plane is greater than 0 and less than or equal to 1.

[0037] The handle assembly for a snow blower includes a first grip configured to be held by a user and a first trigger movably associated with the first grip. The first trigger includes a first heating portion and a remaining portion, the first heating portion having a better heat transfer capability than the remaining portion. The first trigger has an operative state, and when the first trigger is in the operative state, the first heating portion allows heat transfer from the first grip to the user via the first heating portion when the user activates the first trigger.

[0038] The snow blower includes a handle assembly attached to a body and a temperature regulation assembly configured to regulate a temperature of the handle assembly. The handle assembly includes a first grip configured to be held by a user and a first trigger movably associated with the first grip. The first trigger includes a window configured to receive heat transferred from the first grip, and the window may be hollow, solid, or of any other form.

[0039] The snow blower includes a handle assembly attached to a body, a chute assembly pivotally connected to the body, and a temperature regulation assembly configured to regulate a temperature of the handle assembly. The handle assembly includes a first grip configured to be held by a user and a first trigger movably cooperating with the first grip. The first trigger includes a first heating portion and a remaining portion, the first heating portion having a better heat transfer capability than the remaining portion. The first trigger has a cooperative state, and when the first trigger is in the cooperative state, at least a portion of the first trigger extends along a first plane, and a ratio of a projected area of ​​the first heating portion on the first plane to a projected area of ​​the first grip on the first plane is greater than 0 and less than or equal to 1.

[0040] In one example, the chute assembly includes a chute configured to rotate about a chute axis and a deflector configured to rotate about a deflector axis, the handle assembly includes an operating lever having a locked state and an unlocked state, and when the operating lever is in the unlocked state, the operating lever allows the chute and the deflector to rotate, and the operating lever includes a lock, which allows the operating lever to switch between the locked state and the unlocked state.

[0041] In one example, the lock has a locking end, the locking end being substantially flat.

[0042] In one example, the operating lever is located at the center right portion of the handle assembly.

[0043] In one example, the handle assembly includes a reinforcing member configured to reinforce the handle assembly, and the operating lever is attached to the reinforcing member. [Brief explanation of the drawings]

[0044] [Figure 1] 1 is a perspective view of a snow removal machine according to an example of the present application. [Figure 2] 2 is a perspective view of the intake housing, sweep assembly, and scraping assembly of the snow plow of FIG. 1. FIG. [Figure 3] FIG. 2 is a left side view of the intake housing, sweep assembly, and scraping assembly of the snow plow of FIG. 1. [Figure 4] FIG. 2 is a perspective view of a sweep assembly in the snow blower of FIG. 1. [Figure 5] FIG. 2 is a left side view of the sweep assembly and scraping assembly of the snow blower of FIG. 1 of the present application. [Figure 6] 1 is a schematic diagram of a snow blower according to the current art; [Figure 7] 1 is another schematic diagram of a snowplow in the current art, particularly showing the direction of movement of the snowplow in the current art. [Figure 8] 2 is a schematic diagram of the snowplow of FIG. 1, particularly showing the direction of movement of the snowplow of FIG. 1; [Figure 9] 2 is another schematic view of the snowplow of FIG. 1, particularly showing the direction of rotation of the wheel assembly of the snowplow of FIG. 1; [Figure 10] FIG. 2 is a left side view of the intake housing, sweep assembly, scraping assembly, and wheel assembly of the snow plow of FIG. 1. [Figure 11] 2 is a perspective view of the intake housing and scraping assembly of the snowplow of FIG. 1. [Figure 12] 2 is a left side view of the intake housing, sweep assembly, and scraping assembly of the snow plow of FIG. 1, particularly showing the distance to the rear end face of the intake housing. [Figure 13] 2 is a left side view of the intake housing, sweep assembly, and scraping assembly of the snow plow of FIG. 1, particularly showing the distance to the front end of the intake housing. [Figure 14] 2 is a left side view of the intake housing, sweep assembly, and scraping assembly of the snow plow of FIG. 1, particularly showing the distance to the second axis. FIG. [Figure 15]2 is an enlarged partial view of the scraping assembly of the snow plow of FIG. 1, particularly showing angle α. [Figure 16] FIG. 2 is a top view of the intake housing and scraping assembly of the snow plow of FIG. 1. [Figure 17] 2 is a right side view of the intake housing and support member of the snow blower of FIG. 1. FIG. [Figure 18] 2 is a left side view of the intake housing and support member of the snow blower of FIG. 1. FIG. [Figure 19] FIG. 2 is a perspective view of the handle assembly without the housing of the snow blower of FIG. 1. [Figure 20] 20 is a partial enlarged view of the first trigger and first grip of the handle assembly of FIG. 19 in a standby state. FIG. [Figure 21] 20 is a schematic diagram of the projection of the first trigger and first grip of the handle assembly of FIG. 19 on a first plane in a cooperative state, particularly showing the projected area of ​​the first heating portion and the projected area of ​​the first grip. [Figure 22] FIG. 20 is a schematic diagram of a projection of the first trigger and first grip of the handle assembly of FIG. 19 on a first plane in a cooperative state, showing in particular the projection area of ​​the first trigger and the dimensions of the first trigger and the first grip. [Figure 23] 2 is a schematic diagram of a temperature regulation assembly for the snow blower of FIG. 1. [Figure 24] FIG. 20 is a partial enlarged view of the second trigger and second grip of the handle assembly of FIG. 19 in a cooperative position; [Figure 25] FIG. 20 is a schematic representation (including traced lines) of the projection onto a second plane of the second trigger and second grip of the handle assembly of FIG. 19 in an operating state. [Figure 26] 1 is a perspective view of a snow blower according to an example of the present application (with the intake housing, sweep assembly, and scraping assembly removed); FIG. [Figure 27] FIG. 27 is a front view of the snow blower of FIG. 26. [Figure 28] FIG. 27 is a cross-sectional view of the snow blower taken along line AA in FIG. 26. [Figure 29] FIG. 27 is a perspective view of a portion of the operating lever of the snow blower of FIG. 26, particularly showing the lock, operating portion, drive portion, and lever portion. [Figure 30] FIG. 27 is a partially exploded perspective view of the operating lever and chute assembly of the snow blower of FIG. 26. [Figure 31] 27 is a partially exploded view of the operating lever and chute assembly of the snow plow of FIG. 26 in another perspective view. [Figure 32] FIG. 27 is a cross-sectional view of the snow blower taken along line BB in FIG. 26. [Figure 33] FIG. 33 is a partial enlarged view of the gearbox according to FIG. 32. [Figure 34] FIG. 27 is a perspective view of a chute assembly for the snow plow of FIG. 26. DETAILED DESCRIPTION OF THE INVENTION

[0045] Generally, the components of the present application examples as described and illustrated in the figures herein could be arranged and designed in a wide variety of configurations.

[0046] It should be noted that in the following drawings, like numbers and symbols refer to like elements, and once a particular element is defined in one drawing, that element will not be further defined or described in subsequent drawings.

[0047] In the description of this application, the orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "vertical," "horizontal," "front," and "rear" are based on the positions in which the drawings or the products of this application are normally used.

[0048] These orientations or positional relationships are intended solely to facilitate and simplify the description of this application and are not intended to express or imply that the referenced assemblies or elements must have such a particular orientation or be constructed or operated in such a particular orientation. Therefore, these orientations or positional relationships should not be construed as limiting this application. Furthermore, terms such as "first," "second," and "third" are used merely to distinguish between the descriptions and should not be construed as indicating or implying relative importance. In this description, unless otherwise specified, the term "plurality" means two or more.

[0049] In the description of this application, unless otherwise expressly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, the term "connected" may refer to "firmly connected," "removably connected," or "integrated," or may refer to "mechanically connected" or "electrically connected." Those skilled in the art may understand the specific meanings of the above terms in this application based on the specific circumstances.

[0050] In this application, unless expressly specified and limited otherwise, when a first feature is described as "above" or "below" a second feature, the first and second features are in direct contact, or are in contact instead of direct contact via another feature between the two features. Furthermore, when a first feature is described as "above" or "above" a second feature, the first feature is directly above or above the second feature, the first feature is diagonally above or above the second feature, or the first feature is simply at a higher level than the second feature. When a first feature is described as "below" or "below" a second feature, the first feature is directly below or below the second feature, the first feature is diagonally below or below the second feature, or the first feature is simply at a lower level than the second feature.

[0051] It should be noted that quantities or terms indicated by terms such as "about," "approximately," "substantially," etc., are inclusive of the stated value and have the meaning associated with the context. These terms include at least the error, uncertainty, or tolerance caused by manufacturing, assembly, use, etc., associated with measuring the stated value. The terms should further be understood as disclosing a range defined by the absolute values ​​of the two endpoints. The terms may refer to plus or minus a percentage (e.g., 1%, 5%, 10% or more) of the stated value. A quantity or term not indicated by a term should further be understood as a value having an error, uncertainty, or tolerance.

[0052]

[0023] The following detailed description of the embodiments of the present application is given, and the embodiments are illustrated in the drawings. The same or similar reference numerals represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and are intended to explain the present application, and should not be construed as limiting the present application.

[0053] As shown in FIGS. 1 and 2 , snow blower 1 includes housing 10 and sweep assembly 12. Housing 10 includes intake housing 101 that houses at least a portion of sweep assembly 12. In some examples, snow blower 1 includes handle assembly 19 and wheel assembly 13. Sweep assembly 12 and intake housing 101 are disposed in front of handle assembly 19 and wheel assembly 13. Handle assembly 19 is configured to be held by a user. Handle assembly 19 is rotatable relative to housing 10. Wheel assembly 13 is rotatable relative to intake housing 101 about wheel axis x9. When snow blower 1 is in use, a user holds handle assembly 19 and moves snow blower 1 in a direction to clear snow from the ground. In some examples, snow blower 1 is powered by a battery. In some examples, snow blower 1 is powered by a power grid. In some examples, snow blower 1 is powered by fuel. The sweep assembly 12 is driven by an engine, which in some examples is an electric motor.

[0054] The sweep assembly 12 includes a shaft 121 and an auger (spiral blade) 123, which rotate to transport snow on the ground into the intake housing 101. The snow is then discharged through a chute assembly 14 into an open space. In some examples, the auger 123 does not directly contact the ground during rotation to reduce wear and tear on the auger 123. An outer edge 124 of the auger 123 is elevated above the ground, thus leaving some snow on the ground after rotation. The snow blower 1 includes a scraping assembly 16. In some examples, the scraping assembly 16 is slightly elevated above the ground to reduce wear and tear on the scraping assembly 16. The scraping assembly 16 scrapes the remaining snow from the ground, leaving a thin, even layer of snow on the ground.

[0055] The shaft 121 is rotatably mounted to the intake housing 101, and at least a portion of the shaft 121 is housed within the intake housing 101. In some examples, the sweep assembly 12 includes a first auger 127 and a second auger 128. The first auger 127 and the second auger 128 are disposed on the shaft 121 at different axial positions. The first auger 127 and the second auger 128 collect snow from the ground and transport it from the left and right sides of the intake housing 101 toward the center of the intake housing 101. The snow blower 1 includes an impeller 171. The impeller 171 is positioned toward the center of the intake housing 101 and discharges collected snow through the chute assembly 14. Note that the intake housing 101 does not include the portion of the housing 10 that houses the impeller 171.

[0056] The first auger 127 and the second auger 128 are fixedly connected to a shaft 121. The shaft 121 passes through the axes of the first auger 127 and the second auger 128. The shaft 121 rotates about a first axis x1. When the shaft 121 rotates about the first axis x1, the first auger 127 and the second auger 128 rotate together with the shaft 121 about the first axis x1. In some examples, the first auger 127 and the second auger 128 are substantially helical. The first auger 127 and the second auger 128 are formed with spirals in opposite directions, and both the first auger 127 and the second auger 128 spiral toward the center of the intake housing 101.

[0057] The scraping assembly 16 is attached to the intake housing 101. The scraping assembly 16 has a bottom edge 165. The bottom edge 165 is configured to contact the ground. In some examples, the bottom edge 165 is configured to contact the ground. In some examples, the bottom edge 165 is configured to be close to the ground when the snow blower 1 moves on a flat surface, and the bottom edge 165 contacts the ground when the snow blower 1 oscillates or tilts forward. The scraping assembly 16 includes a scraping surface 166. As the scraping assembly 16 scrapes snow from the ground, the snow first contacts the bottom edge 165. The bottom edge 165 separates the snow from the ground surface. As the snow blower 1 moves forward, the snow is collected toward the scraping surface 166. As a result, the scraping surface 166 retains the snow.

[0058] As shown in FIGS. 2 to 5, the bottom edge 165 is located forward of the first axis x1. The snow blower 1 includes a housing 11. The intake housing 101, the sweep assembly 12, the scraping assembly 16, and other components within the intake housing 101 together form the housing 11. Note that the impeller 171 and the portion of the housing 10 that houses the impeller 171 are not part of the housing 11. The housing 11 has a weight and a center of gravity G. The center of gravity G is substantially determined by the weight of the intake housing 101, the sweep assembly 12, the scraping assembly 16, and other components within the intake housing 101. The first auger 127 has a first inner edge 127a. When the first auger 127 rotates, the first inner edge 127a describes a substantially cylindrical path, and the first inner edge 127a defines a first inner circumference 126. The center of gravity G is located within the first inner periphery 126. Note that the first inner periphery 126 is not limited by the actual circumference of the cylinder traced by the locus of the first inner periphery 126.

[0059] The bottom edge 165 is located forward of the center of gravity G. The shaft 121 rotates within the first inner circumference 126. The shaft 121 has a shaft circumference 122. In some examples, the center of gravity G is located within the shaft circumference 122.

[0060] As shown in FIGS. 6-10 , the wheel assembly 13 includes a first wheel 131. The first wheel 131 includes a first contact portion 132. In some examples, the first contact portion 132 is made of a rubber material. As the wheel assembly 13 rotates, at least a portion of the first contact portion 132 contacts the ground. The first contact portion 132 includes a first contact point 133. The position of the first contact point 133 on the first contact portion 132 constantly changes as the wheel assembly 13 rotates, so that the first contact point 133 always contacts the ground as the snow blower 1 moves on a horizontal surface. The position of the first contact point 133 relative to the ground remains constant as the snow blower 1 moves on a horizontal surface.

[0061] A problem with current technology for snow blowers is that when the snow blower 1 encounters thick snow, the front of the snow blower 1 tilts upward. In Figures 6-9, snow remaining on the ground is labeled S1, and snow removed by the snow blower 1 is labeled S2. As shown in Figure 6, with current technology, as the first wheel 131 rolls, friction f1 with the ground at the first contact point 133 moves the snow blower 1 forward. As the snow blower 1 moves forward to clear the snow, the snow creates resistance f2 that pushes the snow blower 1 backward. Thicker snow provides more resistance to the snow blower 1, and thinner snow provides less resistance to the snow blower 1. As shown in Figure 7, with current technology, the bottom edge 165 is located rearward of the first axis x1. If the resistance of the snow to the snow blower 1, f2, is greater than the friction of the ground, f1, against the wheel assembly 13, the front of the snow blower 1 will tend to tilt upward around the first contact point 133 to reduce the resistance and remove thinner snow. As the wheel assembly 13 continues to rotate about the wheel axis x9, the front of the snow blower 1 will tilt upward around the first contact point 133, reducing the thickness of the snow to be removed by the snow blower 1 and causing the wheel assembly 13 to move the snow blower 1 along the tilting direction a. In this situation, snow removal efficiency is low and the user will have to redo their work, which is bothersome and inconvenient.

[0062] As shown in FIG. 8 , when the bottom edge 165 is positioned forward of the first axis x1, the scraping assembly 16 can collect snow before the snow blower 1 begins to move upward. After the auger draws the snow into the intake housing 101, as the snow blower 1 moves forward, the scraping assembly 16 collects the snow and holds it on the scraping surface 166. Because the snow held by the scraping assembly 16 has a gravitational force FG, the snow exerts a downward force on the snow blower 1. The bottom edge 165 of the scraping assembly 16 is positioned forward of the center of gravity G of the housing 11, counteracting the upward tendency of the snow blower 1. This allows the snow blower 1 to move in a substantially horizontal direction b, achieving high-quality snow removal. In some examples, the size of the scraping assembly 16 is increased so that the bottom edge 165 of the scraping assembly 16 is positioned forward of the first axis x1. In some examples, the installation position of the scraping assembly 16 is moved forward so that the bottom edge 165 of the scraping assembly 16 is positioned forward of the first axis x1. In some examples, the installation angle of the scraping assembly 16 is changed so that the bottom edge 165 of the scraping assembly 16 is positioned forward of the first axis x1. In some examples, the bottom edge 165 is positioned forward of the intake housing 101. The scraping assembly 16 is positioned forward of the first axis x1 to increase the snow removal efficiency of the snow blower 1, improve the user experience, and prevent an increase in manufacturing costs.

[0063] As shown in FIG. 9, the tilting movement of the snow blower 1 around the first contact point 133 can be understood as a lever movement. It can be seen that as the front of the snow blower 1 tilts upward about the first contact point 133, the front of the lever also tilts upward about the first contact point 133. When resistance f2 is greater than friction f1, forward movement of the snow blower 1 is prevented, but the wheel assembly 13 continues to rotate in direction c. The continued rotation of the wheel assembly 13 applies a downward force to the rear of the lever, and the total downward force FN acting on the rear of the lever becomes greater than the total downward force acting on the front of the lever. The front of the lever, which is the housing 11, begins to tilt about the first contact point 133. When the bottom edge 165 is positioned forward of the first axis x1, the total gravitational force Fgtotal of the housing 11 increases as snow is retained on the scraping surface 166. The additional weight of snow collected by the scraping assembly 16 increases the total gravitational force Fgtotal of the housing 11, which means that the total downward force acting on the front of the lever increases. As a result, the total downward force acting on the front surface of the lever is approximately equal to the total downward force FN acting on the rear surface of the lever, and the upward motion of the front surface of the snow plow 1 is canceled. As shown in FIG. 10 , the ratio of the longitudinal distance d1 from the bottom edge 165 to the wheel axle x9 to the longitudinal distance d2 from the first axis x1 to the wheel axle x9 is greater than or equal to 1.5. In some examples, the ratio of the longitudinal distance d1 from the bottom edge 165 to the wheel axle x9 to the longitudinal distance d2 from the first axis x1 to the wheel axle x9 is greater than or equal to 1.05 and less than or equal to 1.45. In some examples, the ratio of the longitudinal distance d1 from the bottom edge 165 to the wheel axle x9 to the longitudinal distance d2 from the first axis x1 to the wheel axle x9 is greater than or equal to 1.2 and less than or equal to 1.4. In some examples, the ratio of the longitudinal distance d1 from the bottom edge 165 to the wheel axle x9 to the longitudinal distance d2 from the first axis x1 to the wheel axle x9 is approximately 1.3. Distance d1 is greater than distance d2, and bottom edge 165 is positioned forward of first axis x1, so that the weight of snow collected by scraping assembly 16 is effectively used to counteract the forward upward movement of snow blower 1.

[0064] As shown in FIGS. 11-13 , in some examples, the intake housing 101 has a first sidewall 103 and a second sidewall 106. The second sidewall 106 is opposite the first sidewall 103. The first sidewall 103 and the second sidewall 106 together substantially define a front end 108 and a rear end 109 of the intake housing 101. In some examples, the first sidewall 103 and the second sidewall 106 are substantially flat. A front-to-rear distance d3 from the bottom edge 165 to the rear end 109 is longer than a front-to-rear distance d4 from the first axis x1 to the rear end 109. A front-to-rear distance d5 from the bottom edge 165 to the front end 108 is shorter than a front-to-rear distance d6 from the first axis x1 to the front end 108. A front-to-rear distance d7 from the bottom edge 165 to the rear end 109 is longer than a front-to-rear distance d8 from the center of gravity G to the rear end 109. A front-to-rear distance d9 from the bottom edge 165 to the front end 108 is shorter than a front-to-rear distance d10 from the center of gravity G to the front end 108. Note that the front-to-rear distance is a distance measured along the front-to-rear direction.

[0065] In some examples, the first sidewall 103 has a first leading edge 104. The second sidewall 106 has a second leading edge 107. At least a portion of the first leading edge 104 and at least a portion of the second leading edge 107 are angled rearward toward the top of the intake housing 101. Both the first leading edge 104 and the second leading edge 107 have sloped portions 105a. In some examples, the angle α formed between the sloped portion 105a of the first leading edge 104 and a vertical line is greater than 0 degrees and less than or equal to 40 degrees. The angle formed by the sloped portion 105a of the second leading edge 107 and a vertical line is the same value as the angle α. When the snow blower 1 moves forward, the first leading edge 104 and the second leading edge 107 push snow along their entire lengths if the first leading edge 104 and the second leading edge 107 are designed to be vertical along their entire lengths. This means that the depth of snow that comes into contact with intake housing 101 is deep, and that the resistance f2 that the snow exerts on intake housing 101 is large. At least a portion of first leading edge 104 and at least a portion of second leading edge 107 are inclined rearward to the top of intake housing 101, so that inclined portions 105a of first leading edge 104 and second leading edge 107 do not directly push the snow, thereby reducing the contact area between the snow and intake housing 101 and reducing the resistance f2 that the snow exerts on intake housing 101.

[0066] In some examples, both the first leading edge 104 and the second leading edge 107 have vertical portions 105b. As the snow blower 1 moves forward, the vertical portions 105b of the first leading edge 104 and the second leading edge 107 contact the snow before the inclined portions 105a contact the snow. Because the vertical portions 105b of the first leading edge 104 and the second leading edge 107 push the snow first, the inclined portions 105a do not push the snow directly. Because the amount of snow that contacts the first leading edge 104 and the second leading edge 107 decreases, the snow resistance f2 acting on the snow blower 1 decreases. The reduced snow resistance to the snow blower 1 reduces the tendency for the front of the snow blower 1 to tilt upward.

[0067] In some examples, intake housing 101 has a width of about 28 inches and a height of about 21 inches. In some examples, intake housing 101 has a width of about 18 inches or more and about 32 inches or less. In some examples, intake housing 101 has a width of about 24 inches or more and about 28 inches or less. In some examples, intake housing 101 has a height of about 16 inches or more and about 26 inches or less. In some examples, intake housing 101 has a height of about 20 inches or more and about 21 inches or less. Note that the width of intake housing 101 is measured from left to right, and the height of intake housing 101 is measured from top to bottom.

[0068] As shown in FIGS. 11 and 14 , the scraping assembly 16 is attached to the intake housing 101 along the second axis x2. In some examples, the scraping assembly 16 extends substantially parallel to the second axis x2. The ratio of the longitudinal distance L1 from the front end 108 to the second axis x2 to the longitudinal distance L2 from the front end 108 to the rear end 109 is greater than or equal to 0.5. In some examples, the ratio of the longitudinal distance L1 from the front end 108 to the second axis x2 to the longitudinal distance L2 from the front end 108 to the rear end 109 is greater than or equal to 0.4. The smaller the ratio of the distance L1 to the distance L2, the stronger the intake housing 101. In some examples, the scraping assembly 16 is formed of a metal material. In some examples, the scraping assembly 16 is formed of a composite material.

[0069] In some examples, the scraper assembly 16 is fixedly attached to the intake housing 101 using a first fastener 167 and a second fastener 168. The first fastener 167 and the second fastener 168 are disposed along a second axis x2. The first fastener 167 attaches one end of the scraper assembly 16 to the first sidewall 103, and the second fastener 168 attaches the other end of the scraper assembly 16 to the second sidewall 106. The intake housing 101 defines an opening 102 through which snow can enter the intake housing 101. In some examples, the opening 102 is deformable. When a large amount of snow collects in the intake housing 101, the intake housing 101 tends to deform at the opening 102. The first sidewall 103 and the second sidewall 106 tend to move away from each other as the snow spreads within the intake housing 101. Scraper assembly 16 acts as a stiffening member 21 for intake housing 101. The closer scraper assembly 16 is to opening 102, the less likely intake housing 101 will deform or will deform at opening 102. In some examples, first fastener 167 and second fastener 168 are screws. Scraper assembly 16 has first mounting portion 161, second mounting portion 162, and extension portion 163. First fastener 167 fixedly attaches first mounting portion 161 to first sidewall 103, and second fastener 168 fixedly attaches second mounting portion 162 to second sidewall 106. In some examples, extension portion 163 is fixedly attached to intake housing 101 using spaced screws. In some examples, the scraping assembly 16 includes an integral scraping plate 164. The first mounting portion 161, the second mounting portion 162, and the extension portion 163 integrally form the scraping plate. In some examples, the first mounting portion 161, the second mounting portion 162, and the extension portion 163 are removably connected. In some examples, the first mounting portion 161 and the second mounting portion 162 extend substantially parallel to each other and substantially perpendicular to the extension portion 163.

[0070] As shown in FIG. 15 , the scraping surface 166 is substantially defined by the extension 163. The scraping surface 166 forms an angle β with the ground that is greater than or equal to 0 degrees and less than or equal to 30 degrees. In some examples, the angle β is greater than or equal to 10 degrees and less than or equal to 20 degrees. Because the angle β is greater than or equal to 0 degrees and less than or equal to 30 degrees with respect to the ground, the area of ​​the scraping surface 166 configured to contact snow is smaller, and the snow resistance f2 acting on the scraping assembly 16 is smaller. Because the angle β is greater than or equal to 0 degrees and less than or equal to 30 degrees with respect to the ground, the gap between the scraping assembly 16 and the ground is narrowed, reducing the amount of snow that gets trapped in the gap between the scraping assembly 16 and the ground. Therefore, the intake housing 101 is less likely to be lifted by snow accumulation between the scraping assembly 16 and the ground.

[0071] As shown in FIG. 16 , the first auger 127 has a first outer edge 127b. The first outer edge 127b is configured to contact snow before the intake housing 101 contacts the snow. The first outer edge 127b is positioned forward of the front end 108 so that, as the snow blower 1 moves on a horizontal surface, the auger contacts snow before the intake housing 101 contacts the snow. The first auger 127 contacts snow before the intake housing 101 contacts the snow so that the rotating first auger 127 counteracts some of the resistance that the snow exerts on the intake housing 101. This reduced resistance reduces the tendency for the front of the snow blower 1 to tilt upward. In some examples, a second auger 128 is connected to the shaft 121. The second auger 128 has a second outer edge 129 that is configured to contact snow before the intake housing 101 contacts the snow. The first and second augers 127, 128 contact the snow before the intake housing 101 contacts the snow such that some of the resistance that the snow exerts on the intake housing 101 is counteracted by the rotating first and second augers 127, 128. Because resistance is reduced, the tendency for the front of the snow blower 1 to tip upward is reduced.

[0072] As shown in FIGS. 17 and 18 , snow blower 1 includes a support member 18 connected to intake housing 101. Support member 18 is configured to directly contact the ground. When snow blower 1 moves over the ground, support member 18 raises intake housing 101 off the ground to reduce friction. The contact area between support member 18 and the ground is configured to be smaller than the contact area between intake housing 101 and the ground. In some examples, support member 18 includes a first support member 181 and a second support member 184, each of which is installed on two side walls of intake housing 101, respectively.

[0073] The support member 18 is configured to selectively contact the ground with a first material or a second material. A user can select whether to contact the ground using the first material or the second material depending on the operating environment. In some examples, the support member 18 has a support state and a storage state. When the support member 18 is in the support state, a user can select to contact the ground using the first material.

[0074] When the support member 18 is in a storage state, the user can select to use a second material to contact the ground. In some examples, the first material is a metal material and the second material is a plastic material. When the user wants the snow blower 1 to move over the ground, the user can select to use a metal material to contact the ground because the metal material is abrasion resistant. When the user wants to store the snow blower 1, the user can select to use a plastic material to contact the ground because the plastic material is moisture resistant and will not rust in a humid storage environment. When the user wants the snow blower 1 to move over a wooden deck or marble floor, the user can select to use a plastic material to contact the ground because the plastic material will not scratch the ground.

[0075] At least a portion of support member 18 is movably connected to intake housing 101. First support member 181 has first support portion 182 and second support portion 183, which are arranged substantially symmetrically above and below. Second support member 184 has third support portion 185 and fourth support portion 186, which are arranged substantially symmetrically above and below. First support portion 182 and third support portion 185 are made of a first material, and second support portion 183 and fourth support portion 186 are made of a second material. In some examples, first support portion 182 is fixedly connected to second support portion 183, and third support portion 185 is fixedly connected to fourth support portion 186. Support member 18 is removably attached to intake housing 101 by fasteners. If a user desires to change the material that support member 18 contacts with the ground, the user can remove support member 18 from intake housing 101 by loosening the fasteners and change the orientation of support member 18 that contacts the ground.

[0076] In some examples, the first support 182 is detachably connected to the second support 183, and the third support 185 is detachably connected to the fourth support 186. Methods for connecting the supports include snap-fitting, screw-fitting, etc., as long as the supports are detachable. The support member 18 is fixedly attached to the intake housing 101. If a user desires to change the material of the ground-contacting portion of the support member 18, the user can remove the first support 182 to form the second support 183 and remove the third support 185 from the fourth support 186. The supports can be reattached to one another. In some examples, after the first support 182 is detached from one side of the second support 183, the first support 182 can be reattached to the other side of the second support 183 for storage. After the third support portion 185 is detached from the fourth support portion 186, the third support portion 185 can be reattached to the other side of the fourth support portion 186 for storage. The user can easily select the material of the support member 18 that contacts the ground, making it more convenient to use the snow blower 1 in different working environments. In some examples, the support member 18 and the scraping assembly 16 are attached to the intake housing 101 using the same fasteners. Therefore, the structure is compact and efficient.

[0077] As shown in FIGS. 1 , 19 , and 23 , the snow blower 1 includes a handle assembly 19. The handle assembly 19 is attached to a body 22 of the snow blower 1. A user holds the handle assembly 19 to move the snow blower 1 over the ground. In some examples, the position of the handle assembly 19 relative to the body 22 is adjustable. A user can adjust the position of the handle assembly 19 depending on the user's height. The snow blower 1 includes a temperature adjustment assembly 23. The temperature adjustment assembly 23 is configured to adjust the temperature of the handle assembly 19 so that a user can hold the handle assembly 19 at a comfortable temperature. In some examples, the temperature adjustment assembly 23 increases the temperature of the handle assembly 19 when a user holds it in winter so that the handle assembly 19 keeps the user's hands warm. The handle assembly 19 includes a support frame 191. The support frame 191 extends from a connection end 191 a attached to the rear of the body 22 to an operating end 191 b that is remote from the body 22 when the snow blower 1 is in use. The handle assembly 19 includes a first grip 192 and a first trigger 194. The first grip 192 is coupled to the support frame 191 and is located adjacent to the operating end 191b of the support frame 191. The first grip 192 is configured to be held by a user. The user grasps the first grip 192 to push or pull the snow blower 1. The first trigger 194 is movably connected to the first grip 192. In some examples, the first trigger 194 is rotatable about a first trigger axis x5. When a user grips the handle assembly 19 to move the snow blower 1, a portion of the user's hand is positioned on the first grip 192 and a portion of the user's hand is positioned on the first trigger 194. The user presses or releases the first trigger 194 to rotate the first trigger 194 about the first trigger axis x5.

[0078] The first trigger 194 has a standby state and an operating state. When the first trigger 194 is in the standby state, the first trigger 194 can move toward the first grip 192. When a user wants to operate the snow blower 1, the user moves the first trigger 194 toward the first grip 192, transitioning the first trigger 194 from the standby state to the operating state. In some examples, the user presses the first trigger 194 so that the first trigger 194 rotates toward the first grip 192 about the first trigger axis x5.

[0079] As shown in FIGS. 20-22 , when the first trigger 194 is in the cooperative state, at least a portion of the first trigger 194 extends along a first plane P1. Note that the first plane is defined by the first trigger 194. As the first trigger 194 moves, the first plane moves with the first trigger 194. When the first trigger 194 is in the cooperative state, the first trigger 194 cannot move toward the first grip 192, or the movement of the first trigger 194 toward the first grip 192 is restricted. In some examples, the first grip 192 stops the rotation of the first trigger 194 toward the first grip 192. In some examples, a stop member stops the rotation of the first trigger 194 toward the first grip 192.

[0080] The first trigger 194 includes a first heating portion 195 and a first remaining portion 196. The first heating portion 195 has better heat conductivity than the first remaining portion 196. The first heating portion 195 allows heat to be transferred from the first grip 192 through the first heating portion 195 to a user who activates the first trigger 194. A ratio of a projected area A1 of the first heating portion 195 on the first plane P1 to a projected area A2 of the first grip 192 on the first plane P1 is greater than 0 and less than or equal to 1. In some examples, the ratio of a projected area A1 of the first heating portion 195 on the first plane P1 to a projected area A2 of the first grip 192 on the first plane P1 is greater than or equal to 0.3 and less than or equal to 0.8. In some examples, the ratio of the projection area A1 of the first heating portion 195 on the first plane P1 to the projection area A2 of the first grip 192 on the first plane P1 is approximately 0.5. In some examples, when a user presses the first trigger 194, the first trigger 194 transitions from a standby state to an engaged state. The projection area A1 of the first heating portion 195 on the first plane P1 increases. When the first trigger 194 is in the engaged state, the projection area A1 of the first heating portion 195 on the first plane P1 is maximized. When a user releases the first trigger 194, the first trigger 194 transitions from the engaged state to a standby state. The elastic member drives the first trigger 194 to transition from the engaged state to the standby state. The projection area A1 of the first heating portion 195 on the first plane P1 decreases. In some examples, when the first trigger 194 moves between the standby state and the cooperated state, the projected area A1 of the first heating portion 195 on the first plane P1 does not change.

[0081] When first grip 192 is heated, heat can be transferred to the user's hand through first heating portion 195. Because first trigger 194 is under the user's hand, a larger area of ​​first heating portion 195 means a larger area of ​​the user's hand that can receive the heat transferred through first heating portion 195. The ratio of the projected area A1 of first heating portion 195 on first plane P1 to the projected area A2 of first grip 192 on first plane P1 is greater than 0 and less than or equal to 1, such that first heating portion 195 covers a portion of the surface area of ​​first grip 192 when first trigger 194 is in the engaged state. The ratio of the projection area A1 of the first heating portion 195 on the first plane P1 to the projection area A2 of the first grip 192 on the first plane P1 is 0.3 or more and 0.8 or less, so that most of the user's hands can be warmed by the first grip 192, making the snow blower 1 easy to use.

[0082] In some examples, the ratio of the width W1 of the projection area A1 of the first heating portion 195 on the first plane P1 to the width W2 of the projection area A2 of the first grip 192 on the first plane P1 is greater than 0 and not greater than 1. In some examples, the ratio of the width W1 of the projection area A1 of the first heating portion 195 on the first plane P1 to the width W2 of the projection area A2 of the first grip 192 on the first plane P1 is greater than or equal to 0.3 and not greater than 0.8. Note that the width W1 of the projection area A1 of the first heating portion 195 on the first plane P1 is the total effective width of the projection area A1 of the first heating portion 195 on the first plane P1, and the width W2 of the projection area A2 of the first grip 192 on the first plane P1 is the total effective width of the projection area A2 of the first grip 192 on the first plane P1. In some examples, the width W1 of the first heating portion 195 is measured at the widest point of the first heating portion 195, and the width W2 of the first grip 192 is measured at the widest point of the first grip 192 held by a user. In some examples, the first heating portion 195 has a regular shape, such as a rectangle, a circle, a triangle, etc. In some examples, the first heating portion 195 has an irregular shape, such as a parallelogram, the shape of a letter, the shape of multiple objects, etc.

[0083] In some examples, the ratio of the projected area A1 of the first heating portion 195 on the first plane P1 to the projected area A3 of the first trigger 194 on the first plane P1 is greater than 0 and not greater than 1. In some examples, the ratio of the projected area A1 of the first heating portion 195 on the first plane P1 to the projected area A3 of the first trigger 194 on the first plane P1 is greater than 0.2 and not greater than 0.5. The first heating portion 195 occupies a relatively large area of ​​the first trigger 194, so that the temperature of the first grip 192 can be transferred to a relatively large area of ​​the first trigger 194.

[0084] In some examples, the first trigger 194 extends substantially curved in the direction of the width W3 of the first trigger 194. The ratio of the width W3 of the first trigger 194 to the depth D1 of the first trigger 194 is equal to or greater than 1 and equal to or less than 6. In some examples, the ratio of the width W3 of the first trigger 194 to the depth D1 of the first trigger 194 is approximately 2. The first grip 192 is substantially cylindrical. The diameter D2 of the first grip 192 is equal to or greater than 15 mm and equal to or less than 50 mm. In some examples, the diameter D2 of the first grip 192 is approximately 30 mm.

[0085] First trigger 194 curves in a direction away from first grip 192, which is cylindrical so that first trigger 194 and first grip 192 fit together. When first trigger 194 is in an engaged state, a user holds first trigger 194 and first grip 192 simultaneously, and first trigger 194 and first grip 192 as a whole fit into the palm of the user's hand. Because first trigger 194 and first grip 192 together form a rounded shape that matches the shape of the user's hand, a user can comfortably hold first trigger 194 and first grip 192 simultaneously.

[0086] The first trigger 194 includes a window 195a. The window 195a receives heat transferred from the first grip 192. The window 195a may be hollow, solid, or of any other shape. In some examples, the first heating portion 195 is solid. Note that the term "solid" is used to refer to a solid material. Both hard and flexible materials are considered solid. The thickness T1 of the first trigger 194 is 2 mm or more and 6 mm or less. The thickness of the first trigger 194 is relatively thin, thereby limiting heat loss through the first trigger 194. The first trigger 194 is made of a first material and a second material. The first heating portion 195 is made of a first material, and the first trigger 194 is made of a second material. In some examples, the first material is a metal material, and the second material is a plastic material. The first material has better thermal conductivity than the second material. As a result, when heat is transferred from the first grip 192 through the first trigger 194 to the user's hand, most of the heat is transferred through the first heating portion 195, which is made of the first material with better thermal conductivity. This concentrates the heat in the first heating portion 195, reducing material costs. In some examples, the first trigger 194 is made of a material with a thermal conductivity of 1 W / mK or more and 450 W / mK or less. In some examples, the first trigger 194 is made of a material with a thermal conductivity of 50 W / mK or more and 410 W / mK or less. In some examples, the first trigger 194 is made of a material with a thermal conductivity of 200 W / mK or more and 400 W / mK or less.

[0087] In some examples, the first heating portion 195 is hollow. The window 195a includes a first recess 195b. The first grip 192 includes a first protrusion 193. The first recess 195b is configured to receive the first protrusion 193. In some examples, the first recess 195b is mesh-like. In some examples, the first recess 195b is a hole. As the first trigger 194 moves toward the first grip 192, the first protrusion 193 gradually passes through the first recess 195b. The first trigger 194 has a first trigger surface 194a. When the first trigger 194 is in the engaged state, the first recess 195b receives the first protrusion 193, and the first protrusion 193 protrudes substantially flush with the first trigger surface 194a.

[0088] The first protrusion 193 protrudes substantially flush with the first trigger surface 194a, such that the first protrusion 193 and the first recess 195b form a substantially smooth surface for a user to hold. When the first trigger 194 is in the engaged state, the user's hand contacts both the first trigger 194 and the first protrusion 193. The first protrusion 193 contacts the user's hand, and heat is transferred directly to the user's hand so that there is little heat loss from the first grip 192 to the user's hand. In some examples, the first protrusion 193 protrudes from the first grip 192 by a distance h of 10 mm or less. The distance h by which the first protrusion 193 protrudes from the first grip 192 is relatively small so that heat loss within the first protrusion 193 is minimized, and heat can be transferred to the surface of the first protrusion 193 to warm the user's hand within a short period of time.

[0089] As shown in FIG. 23 , the temperature regulation assembly 23 includes a first resistance wire 231. The first resistance wire 231 is configured to heat the first grip 192. When the resistance wire is heated, the heat is transferred to the first grip 192, and then the heat is transferred to the user's hand via the first heating portion 195. In some examples, the first resistance wire 231 is wrapped around the first grip 192. In some examples, the first resistance wire 231 is wrapped around the inside of the first grip 192, and the first grip 192 is made of a plastic material so that when a user holds the first grip 192, they directly touch the plastic material rather than the resistance wire. This makes the first grip 192 safe and comfortable to hold.

[0090] As shown in FIGS. 24 and 25 , in some examples, the handle assembly 19 includes a second grip 197 and a second trigger 198. The second grip 197 is coupled to the support frame 191 and is located adjacent to the operating end 191b of the support frame 191. The second grip 197 is configured to be held by a user. The user grasps the second grip 197 to push or pull the snow blower 1. The second trigger 198 is movably connected to the second grip 197. In some examples, the second trigger 198 is rotatable about a second trigger axis x6. When a user grips the handle assembly 19 to move the snow blower 1, a portion of the user's hand is positioned on the second grip 197 and a portion of the user's hand is positioned on the second trigger 198. The user presses or releases the second trigger 198 to rotate the second trigger 198 about the second trigger axis x6.

[0091] The second trigger 198 has a standby state and an operating state. When the second trigger 198 is in the standby state, the second trigger 198 can move toward the second grip 197. When the user wants to operate the snow blower 1, the user moves the second trigger 198 toward the second grip 197, transitioning the second trigger 198 from the standby state to the operating state. In some examples, the user presses the second trigger 198 so that the second trigger 198 rotates about the second trigger axis x6 toward the second grip 197.

[0092] When the second trigger 198 is in the cooperative state, at least a portion of the second trigger 198 extends along a second plane P2. It should be noted that the second plane is defined by the second trigger 198. As the second trigger 198 moves, the second plane moves with the second trigger 198. When the second trigger 198 is in the cooperative state, the second trigger 198 cannot move toward the second grip 197, or the movement of the second trigger 198 toward the second grip 197 is restricted. In some examples, the second grip 197 stops the second trigger 198 from rotating toward the second grip 197. In some examples, a stop member stops the second trigger 198 from rotating toward the second grip 197.

[0093] The second trigger 198 includes a second heating portion 199 and a second remaining portion 199a. The second heating portion 199 has better heat conductivity than the second remaining portion 199a. The second heating portion 199 allows heat to be transferred from the second grip 197 through the second heating portion 199 to a user who activates the second trigger 198. A ratio of a projected area A4 of the second heating portion 199 on the second plane P2 to a projected area A5 of the second grip 197 on the second plane P2 is greater than 0 and less than or equal to 1. In some examples, the ratio of a projected area A4 of the second heating portion 199 on the second plane P2 to a projected area A5 of the second grip 197 on the second plane P2 is greater than or equal to 0.3 and less than or equal to 0.8. In some examples, the ratio of the projection area A4 of the second heating portion 199 on the second plane P2 to the projection area A5 of the second grip 197 on the second plane P2 is approximately 0.5. In some examples, when a user presses the second trigger 198, the second trigger 198 transitions from the standby state to the cooperative state. The projection area A4 of the second heating portion 199 on the second plane P2 increases. The projection area A4 of the second heating portion 199 on the second plane P2 is maximum when the second trigger 198 is in the cooperative state. When a user releases the second trigger 198, the second trigger 198 transitions from the cooperative state to the standby state. The elastic member drives the second trigger 198 to transition from the cooperative state to the standby state. The projection area A4 of the second heating portion 199 on the second plane P2 decreases. In some examples, when the second trigger 198 moves between the standby state and the cooperated state, the projected area A4 of the second heating portion 199 on the second plane P2 does not change.

[0094] When second grip 197 is heated, heat is transferred to the user's hand through second heating portion 199. Because second trigger 198 is under the user's hand, a larger area of ​​second heating portion 199 means a larger area of ​​the user's hand that can receive the heat transferred through second heating portion 199. A ratio of a projected area A4 of second heating portion 199 on second plane P2 to a projected area A5 of second grip 197 on second plane P2 is greater than 0 and less than or equal to 1 such that second heating portion 199 covers a portion of the surface area of ​​second grip 197 when second trigger 198 is in the engaged state. The ratio of the projected area A4 of the second heating portion 199 on the second plane P2 to the projected area A5 of the second grip 197 on the second plane P2 is equal to or greater than 0.3 and equal to or less than 0.8, which allows most of the user's hands to be warmed by the second grip 197 and makes the snow blower 1 easy to use. In some examples, the handle assembly 19 includes a first grip 192, a first trigger 194, a second grip 197, and a second trigger 198, and movement of the first trigger 194 is not necessarily associated with movement of the second trigger 198. As a result, the first trigger 194 and the second trigger 198 can move at different times. The handle assembly 19 includes a first heating portion 195 and a second heating portion 199, and can warm both of the user's hands when the first trigger 194 is in an operating state and when the second trigger 198 is in an operating state. The handle assembly 19 is safe and flexible to manipulate and allows the user's hands to be warmed.

[0095] The detailed structure of the second grip 197 and the second trigger 198 is substantially the same as the detailed structure of the first grip 192 and the first trigger 194, and therefore, to avoid repetition, the detailed structure of the second grip 197 and the second trigger 198 will not be described in this application.

[0096] As shown in FIGS. 26 and 27 , the chute assembly 14 is pivotally connected to the main body 22. After snow is taken into the intake housing 101, the snow is discharged through the chute assembly 14. The chute assembly 14 forms a passage 141 for the snow to be discharged. In some examples, the passage 141 is a through hole. The chute assembly 14 includes a chute 142 and a deflector 143. After snow is introduced into the chute 142, it first moves along the chute 142 toward the deflector 143, where it is guided and discharged to the surrounding area by the deflector 143. The chute 142 is configured to rotate about a chute axis x3, and the deflector 143 is configured to rotate about a deflector axis x4. The rotation of the chute 142 about the chute axis x3 allows the direction of the discharged snow to be changed. The rotation of the deflector 143 about the deflector axis x4 allows the height of the discharged snow to be changed.

[0097] The handle assembly 19 includes an operating lever 20. The operating lever 20 has a locked state and an unlocked state. When the operating lever 20 is in the unlocked state, the operating lever 20 can rotate the chute 142 and the deflector 143. When the lever is in the unlocked state, both the chute 142 and the deflector 143 can be rotated relative to the body 22, so that when the operating lever 20 is unlocked, the user can adjust both the chute 142 and the deflector 143. When the lever is in the unlocked state, the user can change both the direction and height of the snow being discharged, making the operation process quick and convenient.

[0098] As shown in FIGS. 28 to 31 , the operating lever 20 includes a lock 201. The lock 201 allows the operating lever 20 to be switched between a locked state and an unlocked state. The lock 201 has a locking end 202 and an attachment end 204. In some examples, the lock 201 slides substantially along the locking direction y to unlock the operating lever 20.

[0099] The operating lever 20 has an operating portion 205, a driving portion 206, and a lever portion 207. The operating portion 205 is configured to be operated by a user. The driving portion 206 is connected to the operating portion 205. The lever portion 207 is connected to the driving portion 206 and the lock 201. The operating portion 205 is configured to rotate around a first lever axis x7. The direction of rotation can be horizontal or vertical. The driving portion 206 is fixed to the operating portion 205. When the operating portion 205 is rotated around the first lever axis x7, the driving portion 206 rotates together with the operating portion 205 around the first lever axis x7. The lever portion 207 includes a driven end 208. The lever portion 207 is configured to rotate around a second lever axis x8. The mounting end 204 of the lock 201 is fixed to the lever portion 207. The lever portion 207 includes a mounting hole 209 spaced from the driven end 208. At least a portion of the mounting end 204 is located within the mounting hole 209. In some examples, the mounting hole 209 is a through hole. The lock 201 passes through the through hole, which has a lock end 202 on one side of the lever portion 207 and a mounting end 204 on the other side of the lever portion 207. An elastic member is attached to the mounting end 204. When a user presses the operating portion 205, the operating portion 205 rotates about the first lever axis x7. The driving portion 206 rotates about the first lever axis x7 and contacts the driven end 208, rotating the lever portion 207. The lever portion 207 rotates about the second lever axis x8, moving the lock 201 substantially along the locking direction y to unlock the operating lever 20. The elastic member is compressively deformed. When the user releases the operating unit 205, the operating unit 205 rotates around the first lever axis x7. The driving unit 206 rotates around the first lever axis x7 and moves in a direction away from the driven end 208. The elastic member recovers from the deformation and drives the lock 201 to move substantially along the locking direction y, thereby locking the operating lever 20.

[0100] The chute assembly 14 includes a receiver 144. The receiver 144 is configured to engage with the locking end 202. When the receiver 144 engages with the locking end 202, the operating lever 20 is in a locked state. When the receiver 144 does not engage with the locking end 202, the operating lever 20 is in an unlocked state. In some examples, the receiver 144 is toothed. In some examples, the receiver 144 is an irregularly shaped hole. In some examples, the lock 201 is a pin. The locking end 202 is substantially flat. The locking end 202 has a corner 203, and the corner 203 has a radius of 1 mm or more and 5 mm or less. Because the locking end 202 is substantially flat and has the rounded corner 203, the contact area between the locking end 202 and the receiver 144 is reduced during the engagement and disengagement processes, reducing friction between the locking end 202 and the receiver 144.

[0101] The operating lever 20 rotates left and right to control the rotation of the chute 142. The operating lever 20 also rotates forward and backward to control the rotation of the deflector 143. When the operating lever 20 is in the locked state, the lock 201 engages with the receiving portion 144, and does not allow the operating lever 20 to rotate left and right or forward and backward. Because the operating lever 20 cannot rotate, neither the chute 142 nor the deflector 143 can rotate. When the operating lever 20 is in the unlocked state, the lock is released from the receiving portion 144, and the operating lever 20 can rotate left and right and forward and backward. Because the operating lever 20 can rotate, the chute 142 and the deflector 143 can also rotate.

[0102] In some examples, when the user rotates the operating lever 20 to the left, the chute 142 rotates to the left about the chute axis x3. When the user rotates the operating lever 20 to the right, the chute 142 rotates to the right about the chute axis x3. When the user rotates the operating lever 20 backward, the deflector 143 rotates upward about the deflector axis x4. When the user rotates the operating lever 20 forward, the deflector 143 rotates downward about the deflector axis x4.

[0103] As shown in FIGS. 30 to 34 , the chute assembly 14 includes a gear box 145 and a motion transmission device 154 that transmits the motion of the operating lever 20 to the gear box 145, the chute 142, and the deflector 143. The gear box is supported by a support bar 149. The motion transmission device 154 is flexible. In some examples, the motion transmission device 154 includes a first flexible member 155, a second flexible member 156, a third flexible member 157, and a fourth flexible member 158. The first flexible member 155 and the second flexible member 156 are configured to transmit the left-right rotation of the operating lever 20. The third flexible member 157 is configured to transmit the forward-backward rotation of the operating lever 20. The fourth flexible member 158 is configured to transmit the movement of the lock 201. In some examples, the first flexible member 155, the second flexible member 156, the third flexible member 157, and the fourth flexible member 158 are wire ropes. In some examples, the motion transmission device 154 may include a belt, a chain, or a flexible shaft 121s. The motion transmission device 154 can conform to different shapes, thereby reducing the packaging space of the snow blower 1. Because the packaging space is reduced, the motion transmission device 154 can be installed on the snow blower 1 before shipping, eliminating the need for the user to install the motion transmission device 154 separately. As shown in FIG. 26 , the motion transmission device 154 extends substantially around the exterior of the snow blower 1, making the snow blower 1 appear compact. The gearbox 145 is positioned near the chute 142 to ensure accurate transmission of the motion of the operating lever 20 to the chute 142 via the gearbox 145.

[0104] The gearbox 145 includes a reel 146, a clutch 147, a first gear 151, a second gear 152, and a third gear 153. The reel 146 and the first gear 151 are fixedly connected to each other. The second gear 152 and the third gear 153 are fixedly connected to each other. The clutch 147 is configured to engage with the third gear 153.

[0105] The fourth flexible member 158 is connected to the clutch 147 and the lock 201. When the lock 201 disengages from the receiver 144 and moves away from the gearbox 145, the fourth flexible member 158 moves away from the gearbox 145. The fourth flexible member 158 drives the clutch 147 to move away from and disengage from the third gear 153. In some examples, the clutch 147 is toothed and configured to rotate about an axis. When the clutch 147 engages with the third gear 153, the teeth of the clutch 147 engage with the teeth of the third gear 153, and the third gear 153 does not rotate. When the clutch 147 rotates in a direction away from the third gear 153, the teeth of the clutch 147 disengage from the third gear 153, and the third gear 153 rotates. The second gear 152 is configured to engage with the first gear 151. The second gear 152 has a first lug 152a and a second lug 152b. The first lug 152a and the second lug 152b are connected to the chute 142. The first flexible member 155 and the second flexible member 156 are wound on the reel 146 in opposite winding directions. In some examples, one end of the first flexible member 155 is connected to the reel 146, and the other end of the first flexible member 155 is connected to the operating lever 20. One end of the second flexible member 156 is connected to the reel 146, and the other end of the second flexible member 156 is connected to the operating lever 20. When a user rotates the operating lever 20 to the left, the operating lever 20 drives the first flexible member 155 to rotate the reel 146 to the left. The first gear 151 rotates together with the reel 146 and rotationally drives the second gear 152. The first lug 152a and the second lug 152b rotate the chute 142 to the left. When the user rotates the operating lever 20 to the right, the operating lever 20 drives the second flexible member 156 and rotates the reel 146 to the right. The first gear 151 rotates together with the reel 146 and rotationally drives the second gear 152. The first lug 152a and the second lug 152b rotate the chute 142 to the right.

[0106] One end of the third flexible member 157 is connected to the deflector 143, and the other end of the third flexible member 157 is connected to the operating lever 20. When a user rotates the operating lever 20 forward, the operating lever 20 drives the third flexible member 157 to rotate the deflector 143 downward. When a user rotates the operating lever 20 rearward, the operating lever 20 drives the third flexible member 157 to rotate the deflector 143 upward. In some examples, the chute assembly 14 includes an elastic member 148. One end of the elastic member 148 is connected to the deflector 143, and the other end of the elastic member 148 is fixedly connected to the chute 142. When the user rotates the operating lever 20 forward, the operating lever 20 drives the third flexible member 157 to rotate the deflector 143 downward, and the elastic member 148 is stretched by the deflector 143 and stores elastic energy. When the user rotates the operating lever 20 backward, the operating lever 20 releases the tension on the third flexible member 157, and the elastic member 148 springs back to its normal shape, causing the deflector 143 to rotate upward.

[0107] As shown in FIG. 27 , the operating lever 20 is located in the center right portion of the handle assembly 19. Note that the center right portion of the handle assembly 19 includes a center portion of the handle assembly 19 and a right portion of the handle assembly 19. In some examples, the operating lever 20 is located in the center of the handle assembly 19. The operating lever 20 is located in the center right portion of the assembly so that a user can comfortably operate the operating lever 20 with their right hand. In some examples, the position of the operating lever 20 is adjustable so that a user can customize the position of the operating lever 20 so that the user can comfortably operate the operating lever 20.

[0108] As shown in FIG. 19 , the handle assembly 19 includes a reinforcing member 21. The reinforcing member 21 reinforces the handle assembly 19. The reinforcing member 21 is located adjacent to the operating end 191b of the handle assembly 19. The operating lever 20 is attached to the reinforcing member 21. In some examples, the reinforcing member 21 is integrated with the support frame 191. In some examples, the reinforcing member 21 is flat. In some examples, the reinforcing member 21 is cylindrical. In some examples, the reinforcing member 21 is made of a metal material.

Claims

1. a shaft having a first auger connected thereto and configured to rotate about a first axis; an intake housing configured to receive at least a portion of the shaft; a scraping assembly attached to the intake housing; The scraping assembly has a bottom edge configured to contact the ground, the bottom edge being disposed forward of the first shaft. Snow blower.

2. the intake housing has a first sidewall and a second sidewall opposite the first sidewall; the first side wall and the second side wall together substantially define a front end and a rear end of the intake housing; The snow blower of claim 1.

3. the first sidewall has a first leading edge; the second sidewall has a second leading edge; At least a portion of the first leading edge and at least a portion of the second leading edge are angled rearward to an upper portion of the intake housing. The snow blower according to claim 2.

4. the scraping assembly is attached to the intake housing along a second axis; a ratio of a front-to-rear distance from the front end to the second axis to a front-to-rear distance from the front end to the rear end is greater than or equal to 0 and less than or equal to 0.5; The snow blower according to claim 2.

5. the scraping assembly is fixedly attached to the intake housing with a first fastener and a second fastener; the first fastening member and the second fastening member are disposed along the second axis. The snow blower according to claim 4.

6. a front-to-rear distance from the bottom edge to the rear end is longer than a front-to-rear distance from the first axis to the rear end; The snow blower according to claim 2.

7. a front-to-rear distance from the bottom edge to the front end is shorter than a front-to-rear distance from the first axis to the front end; The snow blower according to claim 2.

8. the scraping assembly includes a scraping surface that forms an angle with the ground surface of between 0 and 30 degrees, The snow blower of claim 1.

9. the scraping assembly includes an integrated scraping plate; The snow blower of claim 1.

10. the first auger has a first outer edge; the first outer edge is configured to contact the snow before the intake housing contacts the snow. The snow blower of claim 1.

11. a second auger connected to the shaft; the first auger and the second auger are disposed on the shaft along different axial positions; the second auger has a second outer edge; the second outer edge is configured to contact the snow before the intake housing contacts the snow. The snow blower of claim 10.

12. The snow blower includes a support member connected to the intake housing; the support member is configured to elevate the intake housing from the ground and selectively contact the ground with a first material or a second material; The snow blower of claim 1.

13. the support member has a support state and a storage state; the first material is selected to contact the ground when the support member is in the supporting state; the second material is selected to contact the ground when the support member is in the storage state; The snow blower of claim 12.

14. the first material is a metallic material; the second material is a plastic material; The snow blower of claim 12.

15. At least a portion of the support member is movably connected to the intake housing. The snow blower of claim 12.

16. a shaft having a first auger connected thereto and configured to rotate about an axis; an intake housing configured to receive at least a portion of the shaft; a scraping assembly attached to the intake housing; a housing enclosing a center of gravity of the shaft, the first auger, the intake housing, and the scraping assembly; the first auger has a first inner edge defining a first inner periphery; the center of gravity is located within the first inner periphery, the scraping assembly includes a bottom edge configured to contact the ground; The bottom edge is located forward of the center of gravity. Snow blower.

17. a shaft having a first auger connected thereto and configured to rotate about a first axis; an intake housing configured to receive at least a portion of the shaft; a wheel assembly configured to rotate about a wheel axis; a scraping assembly attached to the intake housing; the scraping assembly includes a bottom edge configured to contact the ground; a ratio of a longitudinal distance from the bottom edge to the wheel axle to a longitudinal distance from the first axle to the wheel axle is equal to or greater than 1 and is equal to or less than 1.5; Snow blower.

18. the intake housing has a first sidewall and a second sidewall opposite the first sidewall; the first sidewall and the second sidewall define front and rear ends of the intake housing; 18. The snow blower of claim 17.

19. a front-to-rear distance from the bottom edge to the rear end is longer than a front-to-rear distance from the center of gravity to the rear end; 19. The snow blower of claim 18.

20. a front-to-rear distance from the bottom edge to the front end is shorter than a front-to-rear distance from the center of gravity to the front end; 19. The snow blower of claim 18.

21. a handle assembly attached to the body; a temperature regulation assembly configured to regulate a temperature of the handle assembly; the handle assembly includes a first grip configured to be held by a user and a first trigger movably associated with the first grip; the first trigger comprises a first heating portion and a first residual portion; the first heating portion has a better heat transfer capability than the first remaining portion; the first trigger has a cooperative state, and when the first trigger is in the cooperative state, at least a portion of the first trigger extends along a first plane; a ratio of a projected area of ​​the first heating portion on the first plane to a projected area of ​​the first grip on the first plane is greater than 0 and less than or equal to 1; Snow blower.

22. a ratio of a width of the projected area of ​​the first heating portion on the first plane to a width of the projected area of ​​the first grip on the first plane is greater than 0 and less than or equal to 1; 22. The snow blower of claim 21.

23. a ratio of the projected area of ​​the first heating portion on the first plane to the projected area of ​​the first trigger on the first plane is greater than 0 and less than or equal to 1; 22. The snow blower of claim 21.

24. the first trigger extends substantially curvedly in a width direction of the first trigger; a ratio of a width of the first trigger to a depth of the first trigger is equal to or greater than 1 and equal to or less than 6; 22. The snow blower of claim 21.

25. the first grip is substantially cylindrical; The diameter of the first grip is 15 mm or more and 50 mm or less.

22. The snow blower of claim 21.

26. The thickness of the first trigger is 2 mm or more and 6 mm or less.

22. The snow blower of claim 21.

27. the first trigger is made of a first material and a second material; 22. The snow blower of claim 21.

28. The first material is a metal material and the second material is a plastic material.

28. The snow blower of claim 27.

29. the first trigger is made of a material having a thermal conductivity of 1 W / mK or more and 450 W / mK or less; 22. The snow blower of claim 21.

30. the first trigger includes a first recess; the first grip includes a first protrusion; the first recess is configured to receive the first protrusion; 22. The snow blower of claim 21.

31. the first trigger has a first trigger surface; When the first trigger is in the cooperative state, the first protrusion projects onto substantially the same surface as the first trigger surface.

31. The snow blower of claim 30.

32. The first protrusion protrudes from the first grip by a distance of 10 mm or less.

32. The snow blower of claim 31.

33. the temperature regulation assembly comprising a first resistive wire configured to heat the first grip; The first resistance wire is wound inside the first grip.

22. The snow blower of claim 21.

34. the handle assembly includes a second grip configured to be held by a user and a second trigger movably cooperating with the second grip; the second trigger comprises a second heating portion and a second residual portion; the second heating portion has a better heat transfer capability than the second remaining portion; When the second trigger is in the cooperative state, at least a portion of the second trigger extends along a second plane, and a ratio of a projected area of ​​the second heating portion on the second plane to a projected area of ​​the second grip on the second plane is greater than 0 and less than or equal to 1.

22. The snow blower of claim 21.

35. a first grip configured to be held by a user; a first trigger movably cooperating with the first grip; the first trigger comprises a first heating portion and a first residual portion; the first heating portion has better heat transfer capabilities than the first remaining portion; the first trigger has a cooperative state; When the first trigger is in the cooperative state, the first heating portion allows heat transfer from the first grip through the first heating portion to a user who places the first trigger in the cooperative state. Handle assembly for a snow blower.

36. a handle assembly attached to the body; a temperature regulation assembly configured to regulate a temperature of the handle assembly; the handle assembly includes a first grip configured to be held by a user and a first trigger movably associated with the first grip; the first trigger includes a window configured to receive heat transferred from the first grip; The window may be hollow, solid, or of any other form. Snow blower.

37. a handle assembly attached to the body; a chute assembly pivotally connected to the body; a temperature regulation assembly configured to regulate a temperature of the handle assembly; the handle assembly includes a first grip configured to be held by a user and a first trigger movably associated with the first grip; the first trigger comprises a first heating portion and a first residual portion; the first heating portion has better heat transfer capabilities than the first remaining portion; the first trigger has a cooperative state, and when the first trigger is in the cooperative state, at least a portion of the first trigger extends along a first plane; a ratio of a projected area of ​​the first heating portion on the first plane to a projected area of ​​the first grip on the first plane is greater than 0 and less than or equal to 1; Snow blower.

38. the chute assembly includes a chute configured to rotate about a chute axis and a deflector configured to rotate about a deflector axis; The handle assembly includes an operating lever; The operating lever has a locked state and an unlocked state, When the operating lever is in the unlocked state, the operating lever allows the chute and the deflector to rotate; the operating lever includes a lock, the lock allowing the operating lever to be switched between the locked state and the unlocked state; 38. The snow blower of claim 37.

39. the lock has a locking end; the locking end is substantially flat; 39. The snow blower of claim 38.

40. The operating lever is located at the center right portion of the handle assembly.

39. The snow blower of claim 38.

41. the handle assembly including a reinforcing member configured to reinforce the handle assembly; The operating lever is attached to the reinforcing member.

39. The snow blower of claim 38.

Images