Portable generator

Abstract

The invention relates to the technical field of generators, and discloses a portable generator which comprises a left shell, a right shell and a telescopic adjustable bearing type single pull rod, the upper end of the left shell and the upper end of the right shell are both bent inwards and buckled to form an upper cover, and corresponding left connecting bases and right connecting bases are arranged at the front ends and the rear ends of the left shell and the right shell; connecting brackets are respectively arranged between the left connecting seat and the right connecting seat, the connecting brackets are respectively assembled on single pull rods, the single pull rods are respectively connected to the left connecting seat and the right connecting seat corresponding to the left shell and the right shell through the connecting brackets, and the single pull rods are positioned above the upper cover; the pair of rollers is used for supporting the generator and located below the extending end of the single pull rod, the telescopically adjustable end of the single pull rod is held and moves forwards, and the single pull rod and the rollers are matched to pull the generator to move forwards. The generator can be conveniently held by one hand, the inclination angle between the generator and the ground can be reduced, it is ensured that the oil tank can be filled with oil, and the single-time operation duration of the generator is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of generators, and in particular to a portable generator. Background Art

[0002] In the event of a power outage or power shortage, or during field operations, a portable generator is often used to provide power support. The portable generator includes multiple internal components (such as an engine, a stator, a rotor, an inverter, a fuel tank, etc.) and a supporting structure for supporting the multiple internal components. The supporting structure includes a shell for supporting the internal components of the generator.

[0003] An existing portable generator also includes a pull rod located on the side of a shell, handles located on both sides of the upper surface of the shell, and a pair of rollers below the pull rod. The pull rod and the handle are separately arranged. When the pull rod and the handle are installed on the shell, the shell needs to have multiple mounting holes, which reduces the supporting strength of the shell. When moving the generator up and down (such as walking up stairs), two people or two hands are required to lift it, which is inconvenient to carry it with one hand and inconvenient to use. In addition, the oil tank in the generator fits with the inner wall of the upper surface of the shell. In order to balance the air pressure inside and outside the oil tank, a vent is provided on the oil tank. When the generator is pulled to move by the pull rod and the roller, the generator has a large inclination angle with the ground. In order to prevent the oil in the oil tank from flowing out of the vent into the interior of the generator, the oil tank is usually not filled with oil, which shortens the single running time of the generator and is inconvenient to use. In addition, the leaked oil encounters high temperature, sparks, etc. when the generator is working, which can easily cause a fire.

[0004] There is also a portable generator, the shell of which includes an upper shell and a lower shell that is buckled with the upper shell. The upper shell is provided with a double pull rod arranged along the length direction of the upper surface of the upper shell, and a pair of rollers are provided at the obliquely lower end of the extended end of the double pull rod. When moving the generator up and down, two people or two hands are required to lift it, which is inconvenient to carry it with one hand. Moreover, the upper shell and the lower shell are buckled in the way that when pulling the generator, the double pull rod drives the upper shell upward, and the force is transmitted to the shell, so that the upper shell is easily pulled apart from the lower shell, which can easily cause the shell to deform and squeeze the internal components. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a portable generator that can be conveniently carried by a single pull rod and a single hand, and can prevent the shell from deforming and squeezing internal components while pulling the generator. While being able to conveniently move the generator, the inclination angle between the generator and the ground can be reduced, ensuring that the fuel tank can be filled with oil, extending the single operating time of the generator, and preventing the oil in the fuel tank from flowing out of the vent into the interior of the generator, thereby improving convenience and safety of use.

[0006] The technical solution adopted by the present invention is as follows: a portable generator, comprising a left housing, a right housing, and a retractable and adjustable load-bearing single pull rod, characterized in that: the upper ends of the left housing and the right housing are bent inwards to form an upper cover, and corresponding left connecting seats and right connecting seats are provided at the front and rear ends of the left housing and the right housing; A connecting bracket is provided between the left connecting seat and the right connecting seat, respectively. The connecting brackets are respectively assembled on the single pull rod. The single pull rod is respectively connected to the left connecting seat and the right connecting seat corresponding to the left shell and the right shell through the connecting bracket. The single pull rod is located above the upper cover; It also includes a pair of rollers for supporting the generator and located obliquely below the extended end of the single pull rod. The single pull rod is held at one end that can be telescopically adjusted and moved forward, and the single pull rod and the rollers cooperate to pull the generator forward.

[0007] Compared with the prior art, the present invention has the following beneficial effects: 1) The single pull rod can be used as a handle to assist the operator to carry the generator with one hand, and can also be used as a pull rod and a pair of rollers to pull the generator. One rod has multiple uses and is easy to use. Compared with the single pull rod installed on the left shell and the right shell, the single pull rod is located between the left connecting seat and the right connecting seat, which can save shell materials and can be used for multiple purposes. The single pull rod is used as a handle, which can be conveniently held and quickly installed between the left connecting seat and the corresponding right connecting seat. Compared with the pull rod and the handle being set separately, or compared with the double pull rod, it can save materials. The connecting bracket connects the left connecting seat and the corresponding right connecting seat, that is, it can connect the left shell and the right shell. The single pull rod is located between the left connecting seat and the corresponding right connecting seat, so that the left shell and the right shell themselves do not need to open multiple mounting holes, thereby improving the support strength of the left shell and the right shell, reducing the processing procedures, and improving production efficiency. 2) The single tie rod is located on the center line of the generator width direction and above the upper cover, which enables the left and right shells to be formed at one time. Compared with the double tie rods that are formed by buckling the upper and lower shells and are located above the upper shell along the length direction of the upper shell, when the single tie rod is pulled or lifted, the single tie rod transmits the force to the base through the connecting bracket, the left shell and the right shell, and the left and right shells are subjected to more uniform force, which can prevent the shells from deforming and squeezing the internal components. In addition, compared with the double tie rods that are located above the upper shell and along the length direction of the upper shell, the double tie rods include a connecting rod, a connecting rod, and a connecting rod respectively located at The pull rods at both ends of the connecting rod have two pull rods. In order to smoothly pull the generator, the two pull rods need to be close to the inward bending parts on both sides of the upper shell. When the pull rods are pulled up, since the pull rods are close to the inward bending parts on both sides of the upper shell, pulling up the pull rods will easily cause the inward bending parts on both sides of the upper shell to be deformed by force, thereby squeezing the internal components of the generator. In order to prevent the inward bending parts on both sides of the upper shell from being deformed by force, the pull rods need to be fixedly connected to the upper shell, or a frame formed by connecting multiple rods is set inside the upper shell and the lower shell, which increases production costs, is cumbersome to install, and is inconvenient to disassemble and replace the pull rods; 3) A single pull rod is located above the upper cover. Compared with the pull rod being located on the side of the generator or the pull rod being located inside the upper cover of the generator, for the same type of generator, one generator has a pull rod inside the upper cover, which is called a type A generator, and the other generator has a pull rod above the upper cover, which is called a type B generator (that is, the present invention). When the same person pulls the generator through the pull rod, one end of the generator is pulled up and the other end touches the ground through rollers. Compared with the type A generator, the distance between the type B generator and the bottom of the generator increases. When the same person pulls the generator through the pull rod, the distance between the type B generator and the bottom of the generator increases, that is, the distance from the person's hand decreases, so that the person can grab the pull rod compared to when pulling the type A generator, and one end of the generator is slightly lifted, so that when the generator is pulled, the inclination angle between the type B generator and the ground is smaller than the inclination angle between the type A generator and the ground, that is, the inclination angle between the generator and the ground in the present invention is reduced, so that the oil tank of the generator can be filled with oil when it is tilted, thereby extending the single operation time of the generator, and preventing the oil in the oil tank from flowing out of the vent into the generator, thereby improving the convenience and safety of use; 4) The single pull rod is located above the upper cover. When the generator is pulled by the single pull rod, the line of action of the pulling force is the axial direction of the single pull rod. The roller is used as the fulcrum, and the vertical distance from the fulcrum to the line of action of the force is the first power arm, which is the height direction of the generator. When the pull rod is located on the side of the generator, the roller is used as the fulcrum, and the vertical distance from the fulcrum to the line of action of the force is the second power arm, which is the vertical distance from the fulcrum to the extension line of the pull rod. When the resistance is the same, the larger the power arm, the smaller the power required, and the more labor-saving. That is to say, compared with the conventional pull rod arranged on the inner side of the generator or inside the upper cover of the generator, the present invention is more labor-saving.

[0008] As a preferred embodiment of the present invention, the left connecting seat and the right connecting seat are hollow inside, and the two connecting brackets are respectively located between the corresponding left connecting seat and the right connecting seat. The left connecting seat and the right connecting seat are detachably connected through the corresponding connecting brackets, and the single pull rod passes through the connecting brackets and is connected to the connecting brackets.

[0009] Beneficial effects: 1) The left connecting seat and the right connecting seat are hollow, and space is reserved for the connecting bracket. The left shell and the right shell are connected together through the connecting bracket. Compared with the direct buckling of the left shell and the right shell, the number of connection points between the left shell and the right shell can be increased, and the connection strength between the left shell and the right shell can be improved; 2) The single pull rod is connected to the left shell and the right shell through the connecting bracket. When lifting the generator, hold the single pull rod. The single pull rod lifts the shell formed by buckling the left shell and the right shell through the connecting bracket. Compared with the direct connection of the single pull rod with the left shell and the right shell, the connection surface between the single pull rod and the left shell and the right shell can be increased, and the stability of the connection between the left shell, the right shell and the single pull rod is improved.

[0010] As a preferred embodiment of the present invention, the connection bracket close to the extended end of the single tie rod is provided with a stepped hole whose aperture increases successively along the length direction of the generator, and the connection bracket away from the extended end of the single tie rod is provided with a limiting groove; The single pull rod includes a first sleeve, a second sleeve located in the first sleeve, a third sleeve located in the second sleeve, and a handle connected to the third sleeve, wherein the handle is connected to an adjustment component for driving the second sleeve to slide relative to the first sleeve and the third sleeve to slide relative to the second sleeve; One end of the first sleeve close to the handle abuts against the inner end surface of the step hole, and the other end abuts against the inner surface of the bottom of the limiting groove. The outer surfaces of the first sleeve and the second sleeve are both in contact with the inner wall of the step hole, and the outer surface of the end of the first sleeve away from the handle abuts against the inner wall of the limiting groove.

[0011] Beneficial effects: The stepped hole and the limiting groove can cooperate to limit the axial and radial positions of the first sleeve, and can increase the stability and strength of the connection between the first sleeve and the left shell and the right shell. The stepped hole can also guide the second sleeve along the axial direction of the second sleeve and limit the second sleeve along the radial direction of the second sleeve.

[0012] As a preferred embodiment of the present invention, the longitudinal cross-section of the first sleeve is a symmetrical polygon, the upper surface and the lower surface of the first sleeve are symmetrically concave inward, and the outer surface of the first sleeve is in contact with the inner surface of the connecting bracket; The longitudinal cross-sectional shapes of the connecting bracket, the second sleeve and the third sleeve are the same as the longitudinal cross-sectional shape of the first sleeve; The opposite end surfaces of the two left connecting seats and the opposite end surfaces of the two right connecting seats are respectively provided with extension parts, the longitudinal cross-sectional shape of the extension parts is the same as the longitudinal cross-sectional shape of the first sleeve, and the first sleeve can be snap-connected with the extension parts.

[0013] Beneficial effects: 1) The longitudinal cross-sectional shapes of the connecting bracket, the second sleeve, and the third sleeve are all the same as the longitudinal cross-sectional shape of the first sleeve, and the upper surface and the lower surface of the first sleeve are symmetrically concave inward, so that the connecting bracket limits the first sleeve to prevent the vertical plane of the first sleeve from rotating circumferentially, the first sleeve limits the second sleeve to prevent the vertical plane from rotating circumferentially when the second sleeve slides, and the second sleeve limits the third sleeve to prevent the vertical plane from rotating circumferentially when the third sleeve slides; 2) The longitudinal cross-sectional shape of the extension part is the same as the longitudinal cross-sectional shape of the first sleeve. When the single pull rod is installed on the shell, the single pull rod is clamped with the extension part through the first sleeve, and the extension part radially limits the first sleeve, that is, limits the single pull rod, preventing the need to frequently adjust the position of the single pull rod when installing the single pull rod, and can achieve quick installation. It can also prevent the single pull rod from rotating and slipping when the single pull rod is used as a pull rod, so that the single pull rod drives the generator to rotate, thereby causing the oil in the oil tank in the generator to leak out, and can prevent the oil in the oil tank from flowing out of the vent hole into the generator, thereby improving the convenience and safety of use.

[0014] As a preferred embodiment of the present invention, a stopper close to the handle is provided between the first sleeve and the second sleeve, the first sleeve is sleeved on the stopper, the inner wall of the first sleeve is in contact with the outer surface of the stopper, one end face of the stopper is in contact with the inner end face of the step of the stepped hole, the stopper and the second sleeve are slidably matched, and the first sleeve, the stopper and the second sleeve are matched to be in contact with the inner wall of the stepped hole; The connecting bracket is provided with a notch for checking the connection between the stopper and the first sleeve; The end of the second sleeve away from the handle is provided with a limiting column which can abut against the end surface of the limiting member.

[0015] Beneficial effects: 1) The limiter can increase the thickness of the longitudinal section of the single pull rod, thereby improving the connection strength between the single pull rod and the connecting bracket. When pulling the engine unit, it ensures that the first sleeve is evenly stressed, and also creates a gap between the first sleeve and the second sleeve, reducing the friction between the first sleeve and the second sleeve; 2) The limiter and the limiter column cooperate to prevent the second sleeve from being pulled out; 3) At the notch, the material consumption can be reduced, and the installation status of the limiter and the first sleeve, and the abutment status of the limiter and the stepped hole can be easily checked.

[0016] As a preferred embodiment of the present invention, the connecting bracket includes a connecting sleeve and a mounting plate connected to the connecting sleeve, the connecting sleeve is located above the mounting plate, the single pull rod passes through the connecting sleeve, the left connecting seat and the corresponding right connecting seat are respectively detachably connected to the connecting sleeve, and the left connecting seat and the corresponding right connecting seat are detachably connected through the mounting plate.

[0017] Beneficial effects: the left connecting seat and the corresponding right connecting seat are connected together through the connecting sleeve, and are directly connected together through the mounting plate, which increases the connection points between the mounting plate and the left connecting seat and the right connecting seat, and improves the connection strength and connection stability between the left connecting seat and the corresponding right connecting seat.

[0018] As a preferred embodiment of the present invention, a plurality of reinforcing plates are provided in the left connecting seat and the right connecting seat, and a plurality of first connecting columns with threaded holes are provided between the plurality of reinforcing plates; The connecting sleeve is symmetrically provided with two second connecting columns with threaded holes. The left connecting seat, the connecting sleeve and the right connecting seat are connected by bolts of the first connecting column and the second connecting column. One end of the bolt passes through the second connecting column and abuts against the outer surface of the single pull rod.

[0019] Beneficial effects: the second connecting column can improve the stability and strength of the connection between the connecting sleeve and the left connecting seat and the right connecting seat, and the bolt can also limit the single pull rod to prevent the single pull rod from moving axially and radially.

[0020] As a preferred embodiment of the present invention, first card slots that can be connected to first connecting columns are provided on both sides of the mounting plate, a first connecting hole and a second connecting hole that runs through the bottom of the two first card slots are provided on the mounting plate, the left connecting seat, the mounting plate, and the right connecting seat are connected through the first connecting column and the second connecting hole, and the mounting plate, the mounting plate, and the right connecting seat are bolted together through the first connecting column and the first connecting hole.

[0021] Beneficial effect: The cooperation between the first slot and the first connecting column allows the mounting plate to be directly connected to the left connecting seat (or the right connecting seat), so that the left connecting seat (or the right connecting seat) can limit the position of the mounting plate and provide support, so that the mounting plate can be quickly and accurately positioned in the installation position, that is, to assist the single pull rod in quickly positioning the installation position. Before the two shells are buckled together, there is no need to hold the mounting plate by hand, thereby reducing the workload of the installer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the structure of the portable generator of the present invention; Figure 2 It is a schematic diagram of the structure of a part of the portable generator of the present invention; Figure 3 It is a schematic diagram of the structure at position A of the present invention; Figure 4 It is a schematic diagram of a partial structure of the portable generator of the present invention from another angle; Figure 5 It is a schematic diagram of the structure at position B of the present invention; Figure 6 It is a schematic diagram of the structure of the connecting bracket in the portable generator of the present invention; Figure 7 It is a schematic diagram of a partial structure of the portable generator of the present invention at another angle; Figure 8 This is a schematic diagram of a partial structure of the portable generator of the present invention at another angle; Fig. 9 is a schematic structural diagram of a first sleeve in a portable generator of the present invention; Fig.10 It is a schematic diagram of a partial structure of the portable generator of the present invention at another angle; Fig.11 It is a schematic diagram of the structure at position C of the present invention. DETAILED DESCRIPTION

[0023] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0024] In the description of the present application, the terms "first", "second", "one side", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0026] The figure marks include: left shell 1, left connecting seat 101, right shell 2, right connecting seat 201, single pull rod 3, first sleeve 301, second sleeve 302, third sleeve 303, handle 304, roller 4, connecting bracket 5, connecting sleeve 501, second connecting column 5011, mounting plate 502, first slot 5021, stepped hole 503, limiting slot 504, first connecting column 6, limiting member 7, extension part 8, notch 9, limiting column 10.

[0027] Portable generators, such as Figure 1 As shown, it includes a base, a left shell 1 and a right shell 2 located on opposite sides of the base, a retractable and adjustable load-bearing single pull rod 3 located on the center line of the generator width direction and above the upper cover, and a pair of rollers 4 used to support the generator and located obliquely below the extended end of the single pull rod 3. The lower ends of the left shell 1 and the right shell 2 are connected to the base, and the upper ends of the left shell 1 and the right shell 2 are bent inward and folded to form the upper cover.

[0028] like Figure 7 As shown, left connecting seats 101 are provided at both front and rear ends of the left shell body 1 in the length direction, and right connecting seats 201 that are clamped with the corresponding left connecting seats 101 are provided at both front and rear ends of the right shell body 2 in the length direction. The left connecting seats 101 and the right connecting seats 201 are both hollow inside, and the opposite end surfaces of the two left connecting seats 101 and the opposite end surfaces of the two right connecting seats 201 are respectively provided with extension portions 8, and multiple reinforcing plates are provided in the left connecting seats 101 and the right connecting seats 201, and multiple first connecting columns 6 with threaded holes are provided between the multiple reinforcing plates.

[0029] In this embodiment, a second card slot is provided on the end surface of the left shell 1 close to the right shell 2, and a card strip that is inserted into the second card slot is provided on the end surface of the right shell 2 close to the left shell. When the left connecting seat 101 and the right connecting seat 201 are buckled together, their appearance is conical, with a total of three first connecting columns 6.

[0030] like Figure 1-3As shown, a connecting bracket 5 is provided between the left connecting seat 101 and the corresponding right connecting seat 201, and the two connecting brackets 5 are respectively assembled on the single pull rod 3. The left connecting seat 101 and the right connecting seat 201 are both detachably connected through the corresponding connecting brackets 5. The single pull rod 3 passes through the connecting brackets 5 and is connected to the connecting brackets 5. Compared with the direct buckling connection between the left connecting seat and the right connecting seat, the connecting bracket 5 can increase the connection points between the left connecting seat and the right connecting seat, thereby improving the connection strength and stability between the left connecting seat and the right connecting seat.

[0031] like Figure 3 , 6 As shown, the connecting bracket 5 includes a connecting sleeve 501 and a mounting plate 502 connected to the connecting sleeve 501, the connecting sleeve 501 is located above the mounting plate 502, the single pull rod 3 passes through the connecting sleeve 501, the left connecting seat 101 and the corresponding right connecting seat 201 are respectively detachably connected to the connecting sleeve 501, and the left connecting seat 101 and the corresponding right connecting seat 201 are detachably connected through the mounting plate 502.

[0032] like Figure 6 As shown, two second connecting columns 5011 with threaded holes are symmetrically provided on the connecting sleeve 501, and the left connecting seat 101, the connecting sleeve 501, and the right connecting seat 201 are connected by bolts through the first connecting column 6 and the second connecting column 5011. One end of the bolt passes through the second connecting column 5011 and abuts against the outer surface of the single pull rod 3. The bolt can limit the single pull rod 3.

[0033] A stepped hole 503 whose aperture increases successively along the length direction of the generator is provided in the connecting sleeve 501 near the extended end of the single pull rod 3, and a limiting groove 504 is provided in the connecting sleeve 501 away from the extended end of the single pull rod 3. The single pull rod 3 passes through the stepped hole 503 and the limiting groove 504 to be connected to the connecting sleeve 501, and a notch 9 for checking the connection between the limiting piece 7 and the first sleeve 301 is provided on the connecting sleeve 501.

[0034] In this embodiment, the threaded holes in the two symmetrical second connecting columns 5011 on the connecting sleeve 501 away from the extended end of the single pull rod 3 can be connected, and the two symmetrical second connecting columns 5011 on the connecting sleeve 501 away from the extended end of the single pull rod 3 are located outside the bottom of the limiting groove 504.

[0035] like Figure 8 As shown, first card slots 5021 which can be engaged with the first connecting column 6 are provided on both sides of the mounting plate 502, a first connecting hole and a second connecting hole running through the bottom of the two first card slots 5021 are provided on the mounting plate 502, the left connecting seat 101, the mounting plate 502, and the right connecting seat 201 are connected through the first connecting column 6 and the second connecting hole, and the left connecting seat 101, the mounting plate 502, and the right connecting seat 201 are connected through the first connecting column 6 and the first connecting hole bolts.

[0036] like Fig.10 , 11 As shown, in this embodiment, the second connecting hole is provided with a limiting column, which is used to connect the first connecting column 6 and the second connecting hole. The relative surfaces of the two left connecting seats 101 are smoothly transitioned to the connection between the left shell body 1, and the relative surfaces of the two right connecting seats 201 are smoothly transitioned to the connection between the right shell body 2, which can increase the connection strength between the left connecting seat 101 and the left shell body 1, and the connection strength between the right connecting seat 201 and the right shell body 2. The relative surfaces of the two mounting plates 502 are respectively fitted with the corresponding left connecting seat 101 and the right connecting seat 201, and are arc-shaped, which can increase the connection stability between the mounting plate 502 and the corresponding connecting seat.

[0037] In this embodiment, the single pull rod 3 is used to lift the generator. The single pull rod 3 is located above the upper cover, that is, there is a gap between the single pull rod 3 and the top of the left shell 1 and the right shell 2. The single pull rod 3 is a three-section telescopic pull rod, which can be stretched and enhance the strength of the single pull rod itself, so that the single pull rod can bear the weight of the generator. The position of the single pull rod does not affect the volume of the oil tank, and can reduce the tilt angle of the generator when pulling the generator to move.

[0038] like Figure 4 , 5 As shown, the single pull rod 3 includes a first sleeve 301, a second sleeve 302 located in the first sleeve 301, a third sleeve 303 located in the second sleeve 302, and a handle 304 connected to the third sleeve 303, and the handle 304 is connected to an adjustment component that drives the second sleeve 302 to slide and adjust relative to the first sleeve 301 and the third sleeve 303 to slide and adjust relative to the second sleeve 302.

[0039] The first casing 301 is provided with a rubber sleeve to improve the comfort of the operator when carrying the generator. The longitudinal section of the first casing 301 is a symmetrical polygon. The upper and lower surfaces of the first casing 301 are symmetrically concave inwards. Specifically, Fig. 9 As shown, both sides of the first sleeve 301 are vertical planes, the upper surface and the lower surface are both concave in the middle, and the two sides are symmetrical and convex outward, the longitudinal cross-sectional shapes of the connecting sleeve 501, the limit member 7, the second sleeve 302, and the third sleeve 303 are all the same as the longitudinal cross-sectional shape of the first sleeve 301, the longitudinal cross-sectional shape of the extension part 8 is the same as the longitudinal cross-sectional shape of the first sleeve 301, and the first sleeve 301 can be snap-connected with the extension part 8.

[0040] In this embodiment, both sides of the first sleeve 301 are vertical planes, which can increase the friction between the connecting sleeve 501, the limiting member 7, the first sleeve 301, the second sleeve 302, and the third sleeve 303, and ensure that the thread is stably in contact with the outer wall of the first sleeve 301, thereby stably limiting the first sleeve 301.

[0041] In this embodiment, the adjustment component is a conventional adjustment component for adjusting the telescopic extension of a single pull rod. Taking the telescopic extension of two sections of sleeves as an example, a limiting piece is provided at the end of the second sleeve away from the handle, and a plurality of limiting holes are provided at axial intervals along the first sleeve. A pressing block is provided on the handle, and a first spring is provided on the outer sleeve of the pressing block. One end of the pressing block is connected to the limiting piece. The pressing block is pressed by hand, and the pressing block causes the limiting column on the limiting piece to move horizontally out of the limiting hole. The pressing block is released, and the second sleeve is pulled to the set position limiting hole. Under the elastic force of the second spring on the limiting piece, the limiting column on the upper limit piece of the second sleeve is engaged with the corresponding limiting hole to complete the stretching of the second sleeve. The shortening operation is the same as the stretching operation, except that the second sleeve is moved downward.

[0042] The outer surface of the first sleeve 301 fits with the inner surface of the connecting sleeve 501. In this embodiment, one end of the first sleeve 301 close to the handle 304 abuts against the inner end surface of the step of the stepped hole 503, and the other end abuts against the inner surface of the bottom of the limiting groove 504. The outer surfaces of the first sleeve and the second sleeve 302 both fit with the inner wall of the stepped hole 503, and the outer surface of the end of the first sleeve away from the handle 304 fits with the inner wall of the limiting groove 504.

[0043] A limiting member 7 close to the handle 304 is provided between the first sleeve 301 and the second sleeve 302, the first sleeve 301 is sleeved on the limiting member 7, the inner wall of the first sleeve fits with the outer surface of the limiting member 7, one end face of the limiting member 7 abuts with the inner end face of the step of the stepped hole 503, the limiting member 7 and the second sleeve 302 are slidably matched, the first sleeve 301, the limiting member 7 and the second sleeve 302 fit with the inner wall of the stepped hole 503, and the end of the second sleeve 302 away from the handle 304 is provided with a limiting column 10 that can abut with the end face of the limiting member 7.

[0044] The limiting member 7 includes an annular connecting ring and a hollow cylinder. One end of the first sleeve 301 abuts against the annular connecting ring and fits against the outer wall of the hollow cylinder.

[0045] The two rollers 4 are connected to the base. Hold one end of the single pull rod 3 that can be telescopically adjusted and move forward. The single pull rod 3 and the rollers 4 cooperate to pull the generator forward.

[0046] In this embodiment, the single tie rod is located above the upper cover. Compared with the tie rod located inside the upper cover, the left shell and the right shell do not need to be set higher and wider to reserve installation space for the tie rod, which can save materials. The oil tank can also be fitted with the upper cover, and the contact surface is increased, thereby improving the compactness between the internal components of the generator and the frame. The oil tank does not need to be reduced in size to reserve installation space for the tie rod, thereby increasing the operating time of the generator.

[0047] In this embodiment, since the longitudinal cross-sectional shape of the first sleeve 301 on the single pull rod 3 is a symmetrical polygon, the upper surface and the lower surface of the first sleeve 301 are symmetrically concave inward, and the longitudinal cross-sectional shapes of the first sleeve 301, the second sleeve 302, the third sleeve 303, the stepped hole, the limiter 7, and the extension 8 are all the same, the single pull rod 3 is fixedly connected to the first connecting column 6 on the left connecting seat 101 and the right connecting seat 201 respectively through the second connecting column 5011 on the connecting bracket 5, the second connecting column 5011 and the corresponding first connecting column 6 cooperate to limit the single pull rod 3 axially and radially through the connecting bracket 5, the single pull rod 3 is fixedly connected to the first connecting column 6 on the left connecting seat 101 and the right connecting seat 201 respectively through the first connecting hole and the second connecting hole on the connecting bracket 5, and the first connecting hole, the second connecting hole and the first connecting hole The column 6 cooperates with the connecting bracket 5 to limit the single pull rod 3 axially and radially. The single pull rod 3 is clamped with the first connecting column 6 through the first clamping groove 5021, so that the connecting bracket 5 can be quickly installed on the left connecting seat 101 (or the right connecting seat 201). The first sleeve 301 on the single pull rod 3 is clamped with the connecting bracket 5 through the limiting member 7. The connecting bracket 5 radially limits the single pull rod 3 through the limiting member 7. The connecting bracket 5 axially limits the single pull rod 3 through the stepped hole. The single pull rod 3 is clamped with the extension part 8 through the first sleeve 301. The extension part 8 radially limits the single pull rod 3, so that the single pull rod 3 has more connection points, clamping points, and limiting points with the left connecting seat 101 and the right connecting seat 201, thereby improving the stability of the connection between the single pull rod 3 and the left connecting seat 101 and the right connecting seat 201, so that the single pull rod 3 can be used as a handle to carry the generator; The first slot 5021 on the connecting bracket 5 is engaged with the first connecting column 6, and the extension part 8 is engaged with the first sleeve 301 on the single pull rod 3, so that the single pull rod 3 can be quickly located in the installation position, thereby realizing the quick installation of the single pull rod 3. Since the first sleeve 301 on the single pull rod 3 is limited in multiple places in the radial and axial directions, the first sleeve 301, the second sleeve 302, and the third sleeve 303 are limited to each other, which can prevent the single pull rod 3 from slipping and rotating when pulling the generator to move, thereby causing the generator to shake, preventing the oil in the oil tank inside the generator from flowing out, and preventing the oil in the oil tank from flowing out of the vent into the inside of the generator, thereby improving the convenience and safety of use.

[0048] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A portable generator, comprising a left housing, a right housing, and a retractable and adjustable load-bearing single pull rod, characterized in that: The upper ends of the left shell and the right shell are bent inwards and folded to form an upper cover, and corresponding left connecting seats and right connecting seats are provided at the front and rear ends of the left shell and the right shell; A connecting bracket is provided between the left connecting seat and the right connecting seat, respectively. The connecting brackets are respectively assembled on the single pull rod. The single pull rod is respectively connected to the left connecting seat and the right connecting seat corresponding to the left shell and the right shell through the connecting bracket. The single pull rod is located above the upper cover; It also includes a pair of rollers for supporting the generator and located obliquely below the extended end of the single pull rod. The single pull rod is held at one end that can be telescopically adjusted and moved forward, and the single pull rod and the rollers cooperate to pull the generator forward.

2. The portable generator according to claim 1, characterized in that: The left connecting seat and the right connecting seat are both hollow inside, and the two connecting brackets are respectively located between the corresponding left connecting seat and the right connecting seat. The left connecting seat and the right connecting seat are both detachably connected through the corresponding connecting brackets, and the single pull rod passes through the connecting brackets and is connected to the connecting brackets.

3. The portable generator according to claim 1, characterized in that: The connecting bracket close to the extended end of the single pull rod is provided with a stepped hole whose aperture increases successively along the length direction of the generator, and the connecting bracket away from the extended end of the single pull rod is provided with a limiting groove; The single pull rod includes a first sleeve, a second sleeve located in the first sleeve, a third sleeve located in the second sleeve, and a handle connected to the third sleeve, wherein the handle is connected to an adjustment component for driving the second sleeve to slide relative to the first sleeve and the third sleeve to slide relative to the second sleeve; One end of the first sleeve close to the handle abuts against the inner end surface of the step hole, and the other end abuts against the inner surface of the bottom of the limiting groove. The outer surfaces of the first sleeve and the second sleeve are both in contact with the inner wall of the step hole, and the outer surface of the end of the first sleeve away from the handle abuts against the inner wall of the limiting groove.

4. The portable generator according to claim 3, characterized in that: The longitudinal cross-section of the first sleeve is a symmetrical polygon, the upper surface and the lower surface of the first sleeve are symmetrically concave inward, and the outer surface of the first sleeve is in contact with the inner surface of the connecting bracket; The longitudinal cross-sectional shapes of the connecting bracket, the second sleeve and the third sleeve are the same as the longitudinal cross-sectional shape of the first sleeve; The opposite end surfaces of the two left connecting seats and the opposite end surfaces of the two right connecting seats are respectively provided with extension parts, the longitudinal cross-sectional shape of the extension parts is the same as the longitudinal cross-sectional shape of the first sleeve, and the first sleeve can be snap-connected with the extension parts.

5. The portable generator according to claim 3, characterized in that: A stopper close to the handle is provided between the first sleeve and the second sleeve, the first sleeve is sleeved on the stopper, the inner wall of the first sleeve is in contact with the outer surface of the stopper, one end face of the stopper is in contact with the inner end face of the step of the stepped hole, the stopper and the second sleeve are slidably matched, and the first sleeve, the stopper and the second sleeve are matched to be in contact with the inner wall of the stepped hole; The connecting bracket is provided with a notch for checking the connection between the stopper and the first sleeve; A limiting column capable of abutting against an end surface of the limiting member is disposed at one end of the second sleeve away from the handle.

6. The portable generator according to claim 1, characterized in that: The connecting bracket includes a connecting sleeve and a mounting plate connected to the connecting sleeve, the connecting sleeve is located above the mounting plate, the single pull rod passes through the connecting sleeve, the left connecting seat and the corresponding right connecting seat are respectively detachably connected to the connecting sleeve, and the left connecting seat and the corresponding right connecting seat are detachably connected through the mounting plate.

7. The portable generator according to claim 6, characterized in that: A plurality of reinforcing plates are disposed in the left connecting seat and the right connecting seat, and a plurality of first connecting columns with threaded holes are disposed between the plurality of reinforcing plates; The connecting sleeve is symmetrically provided with two second connecting columns with threaded holes. The left connecting seat, the connecting sleeve and the right connecting seat are connected by bolts of the first connecting column and the second connecting column. One end of the bolt passes through the second connecting column and abuts against the outer surface of the single pull rod.

8. The portable generator according to claim 7, characterized in that: The mounting plate is provided with first slots on both sides that can be connected with the first connecting column, the mounting plate is provided with a first connecting hole and a second connecting hole that runs through the bottom of the two first slots, the left connecting seat, the mounting plate and the right connecting seat are connected through the first connecting column and the second connecting hole, and the mounting plate, the mounting plate and the right connecting seat are bolted together through the first connecting column and the first connecting hole.

Images