Internal connection structure of portable power supply equipment

Abstract

The invention discloses an internal connection structure of portable power supply equipment, which comprises a machine shell, an electric energy generating device and a frame, the electric energy generating device is arranged in the frame and is connected with the machine shell through the frame, and the machine shell is used for sealing the electric energy generating device and the frame; the top of the machine shell and the frame are connected through a plurality of parallel supporting pieces, the tops of the supporting pieces and the top of the machine shell are detachably connected through threaded connection structures, and the bottoms of the supporting pieces and the top of the frame are detachably connected through threaded connection structures. A special connecting structure is designed between the electric energy generating device and the top and the bottom of the machine shell, so that the strength of the machine shell has no influence on the strength of the connecting structure, a plastic machine shell with low strength is allowed to be adopted, and the weight and the cost of the plastic machine shell are far lower than those of a metal machine shell; the power supply equipment designed by the patent has the obvious advantages of high strength, light weight, low cost and attractive appearance, is very suitable for being applied to various portable power supply equipment products, and has obvious technical advantages.

Description

Technical Field

[0001] The invention relates to the technical field of lighting of power supply equipment, in particular to an internal connection structure of a portable power supply equipment. Background Art

[0002] In the prior art, portable power supply equipment mainly includes four categories of products: portable energy storage power supply (Portable Power Station), generator set driven by internal combustion engine (Generator Set), solar photovoltaic power station (Solar Power Station), and welding machine (Welding Machine), etc. Power supply equipment has a wide range of applications, such as self-contained power supply, emergency power supply, power supply in power-deficient areas, power generation or material welding, etc.

[0003] The power supply equipment is mainly composed of an electric energy generator and a housing. A handle for movement is usually set on the top of the housing, and a support foot is set at the bottom. Since the electric energy generator is heavy, the housing of the power supply equipment in the prior art is mostly made of metal plates to ensure structural strength. The handle on the top and the support foot at the bottom are directly connected to the metal housing to ensure connection strength. However, since the metal housing is heavy, this design reduces the portability of the power supply equipment. The metal housing of the power supply equipment in the prior art is relatively bulky and costly, and is not suitable for application in portable power supply equipment. Summary of the invention

[0004] The purpose of the present invention is to provide an internal connection structure of a portable power supply device, aiming to improve the problem that the metal casing of the existing power supply device is relatively bulky, has a high cost and is not suitable for application in portable power supply devices.

[0005] The present invention is achieved in that:

[0006] An internal connection structure of a portable power supply device includes a casing and an electric energy generating device, and also includes a frame. The electric energy generating device is arranged inside the frame, and the electric energy generating device is connected to the casing through the frame. The casing is used to enclose the electric energy generating device and the frame; a handle is arranged on the top of the casing, and the top of the casing is connected to the frame through a plurality of mutually parallel supporting members, and the top of the supporting member and the top of the casing, and the bottom of the supporting member and the top of the frame are all detachably connected through a threaded connection structure.

[0007] Furthermore, the top and bottom of the support member are respectively provided with an upper end surface and a lower end surface, and a threaded hole is respectively provided on the upper end surface and the lower end surface. The top of the casing is provided with a casing table top, and a first connecting hole is provided on the casing table top. The screw passes through the first connecting hole and is connected with the threaded hole on the upper end surface of the support member. The top of the frame is provided with a frame table top, and a stud is provided on the frame table top, and the stud is connected to the threaded hole on the lower end surface of the support member.

[0008] Furthermore, a pit structure is provided on the top of the casing, the casing table is arranged on the inner wall of the pit structure, the head of the screw is located in the recess of the pit structure, the head of the screw is fitted with the outer wall of the pit structure, and the inner wall of the pit where the casing table is located is fitted with the upper end surface of the support.

[0009] Furthermore, the handle is connected to the top of the casing through a pressing block, and an extension structure made of rubber is provided on the pressing block. The extension structure covers the screw head so that it is invisible from the outside.

[0010] Furthermore, a plurality of supporting feet are provided at the bottom of the casing, a plurality of supporting legs are provided at the bottom of the frame, a second connecting hole is provided on the supporting leg, and the second connecting hole is located directly above the supporting foot; the supporting leg and the supporting foot are connected by a fastener, and the fastener passes through the second connecting hole and is connected to the casing and the supporting foot, and the frame is connected to the supporting foot through the supporting leg, and the casing is located between the supporting leg and the supporting foot.

[0011] Furthermore, a reinforcement structure is provided between the support leg and the frame, and the reinforcement structure is connected to the support leg by welding or riveting.

[0012] Furthermore, the housing includes an upper housing and a lower housing, the upper housing is connected to the lower housing via a connecting piece, the handle is connected to the top of the upper housing, and the supporting foot is connected to the bottom of the lower housing.

[0013] Furthermore, the upper housing and the lower housing are made of plastic material, the frame and its supporting legs are made of metal plates, and the supporting feet are made of soft material.

[0014] Furthermore, the frame table top is a planar structure at the top of the frame, the roots of the studs on the frame table top are connected to the top of the frame by riveting or welding, and the frame table top is fitted with the lower end surface of the support.

[0015] Furthermore, the support member is a polygonal columnar structure and is made of metal material.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention designs a special connection structure between the electric energy generating device and the top and bottom of the casing so that the strength of the casing has no effect on the strength of its connection structure. Therefore, this patent allows the use of a plastic casing with lower strength. The weight and cost of a plastic casing are much lower than those of a metal casing. The power supply equipment designed using this patent has the obvious advantages of high strength, light weight, low cost and beautiful appearance. It is very suitable for application in various types of portable power supply equipment products and has obvious technical advantages.

[0018] 2. The top of the casing of the present invention is provided with a pit structure, the casing table is arranged on the inner wall of the pit structure, and the head of the screw is located in the concave part of the pit structure, which can reduce the overall size of the machine.

[0019] 3. The handle of the present invention is connected to the top of the casing through a pressing block, and an extension structure made of rubber is provided on the pressing block. The extension structure covers the screw head to make it invisible, thereby preventing water accumulation and improving the appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 is an exploded view of the present invention;

[0022] Figure 3 It is a front view of the present invention;

[0023] Figure 4 yes Figure 3 AA section view;

[0024] Figure 5 yes Figure 4 Enlarged view of area B;

[0025] Figure 6 It is a schematic diagram of a three-dimensional structure in which the frame of the present invention and the supporting members are connected;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the support member of the present invention.

[0027] In the figure: 1. casing; 2. electric energy generating device; 3. frame; 4. support member; 5. upper end surface; 6. lower end surface; 7. threaded hole; 8. casing table; 9. first connecting hole; 10. screw; 11. frame table; 12. stud; 13. pit structure; 14. handle; 15. pressure block; 16. extension structure; 17. supporting foot; 18. supporting leg; 19. second connecting hole; 20. fastener; 21. connector; 22. upper casing; 23. lower casing. DETAILED DESCRIPTION

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0030] The portable power supply equipment described in this application mainly includes the following four categories of products: portable energy storage power supply (Portable Power Station), generator set (Generator Set) driven by internal combustion engine, solar photovoltaic power station (Solar Power Station), and welding machine (Welding Machine).

[0031] The energy storage power supply mainly includes batteries, inverters and controllers. The batteries can be charged from AC power, solar energy, wind turbines or various fuel generators. The inverter can convert the DC power of the battery into AC output. Of course, various DC outputs can be added as needed, and various protection functions can be added through the controller to control the input and output.

[0032] The generator set is mainly composed of an engine, a generator and an electronic control system. The generator outputs electrical energy under the drive of the engine and can convert the chemical energy of fuel or gas into electrical energy. For digital generators, it also includes an inverter, which can convert the medium-frequency AC output of the generator into a stable-voltage industrial-frequency AC at various speeds.

[0033] Solar photovoltaic power stations use solar panels to convert solar energy into electrical energy, and convert direct current from solar panels or batteries into alternating current output through inverters and electronic control systems. Electric welding machines mainly include transformers and electronic control systems. The transformer steps down the voltage of AC / DC power from the mains, generators or batteries, and outputs low-voltage, high-current AC and / or DC power after processing by the electronic control system. The high current melts metal materials for welding.

[0034] The present invention has an electric energy generating device, and the electric energy generating device is different according to the above four power supply devices. The electric energy generating device of the portable energy storage power supply is mainly a battery, an inverter and a controller; the electric energy generating device of the generator set is mainly an engine, a generator and an inverter; the electric energy generating device of the solar photovoltaic power station is mainly an inverter and an electric control system, and of course, for the energy storage type solar power station, it also includes a storage battery; the electric energy generating device of the electric welding machine is mainly a transformer and an electric control system.

[0035] like Figure 1 , Figure 2 and Figure 6 As shown, an internal connection structure of a portable power supply device includes a housing 1, an electric energy generator 2 and a frame 3. The electric energy generator 2 is arranged inside the frame 3. The electric energy generator 2 is connected to the housing 1 through the frame 3. The housing 1 is used to enclose the electric energy generator 2 and the frame 3. In order to facilitate the movement of the whole machine, a handle is provided at the front of the housing 1, a roller device is provided at the rear of the housing, and a pull rod device is provided at the bottom of the housing. The housing 1 includes an upper housing 22 and a lower housing 23. The upper housing 22 and the lower housing 23 are connected by a connecting member 21. The upper housing 22 and the lower housing 23 are made of plastic material, which is convenient for reducing the weight of the whole machine. The frame 3 is made of a metal sheet, the metal frame 3 has sufficient connection strength, and the metal frame 3 is a hollow structure, which reduces the weight as much as possible. The top of the housing 1 is connected to the frame 3 through a plurality of mutually parallel support members 4. The support member 4 is a polygonal columnar structure, which is directly tightened with a wrench to facilitate assembly and production. The support member 4 is made of a metal material, and the preferred material is aluminum alloy. The top of the support member 4 and the top of the housing 1 , as well as the bottom of the support member 4 and the top of the frame 3 , are detachably connected via a threaded connection structure.

[0036] In some exemplary embodiments, Figure 2-Figure 7 As shown, the top and bottom of the support member 4 are respectively provided with an upper end face 5 and a lower end face 6, and a threaded hole 7 is provided on each of the upper end face 5 and the lower end face 6. A housing table 8 is provided on the top of the housing, and a first connecting hole 9 is provided on the housing table 8. A screw 10 passes through the first connecting hole 9 and is connected to the threaded hole 7 of the upper end face 5 of the support member 4. A frame table 11 is provided on the top of the frame 3. The frame table 11 is a planar structure at the top of the frame 3. A stud 12 is provided on the frame table 11. The root of the stud 12 is connected to the top of the frame 3 by riveting or welding. The stud 12 is connected to the threaded hole 7 of the lower end face 6 of the support member 4, and the frame table 11 is fitted with the lower end face 6 of the support member 4. This is the preferred solution of this patent.

[0037] In some other exemplary embodiments, both ends of the support member 4 are provided with studs with external threads, which are connected with nuts on the top of the housing 1 and threaded holes on the top of the frame 3. This is a suboptimal solution of this patent.

[0038] like Figure 3-Figure 6As shown, a concave structure 13 is provided on the top of the casing 1, the casing table 8 is provided on the inner wall of the concave structure 13, and the head of the screw 10 is located in the concave part of the concave structure 13, which can reduce the overall size of the machine. The head of the screw 10 fits with the outer wall of the concave structure 13, and the inner wall of the concave where the casing table 8 is located fits with the upper end surface 5 of the support member 4. A plurality of handles 14 are provided on the top of the casing 1, and the handles 14 are connected to the top of the upper casing 22. The handles 14 are connected to the top of the casing through a pressing block 15, and a rubber extension structure 16 is provided on the pressing block 15. The extension structure 16 covers the head of the screw 10 to make it invisible, prevent water accumulation, and improve the appearance.

[0039] like Figure 1 , Figure 4 and Figure 6 As shown, the bottom of the housing 1 is provided with a plurality of support feet 17, which are connected to the bottom of the lower housing 23, and are made of soft materials such as rubber. The bottom of the frame 3 is provided with a plurality of support legs 18, which are made of metal plates, and are provided with second connection holes 19, which are located directly above the support legs 17. The support legs 18 and the support feet 17 are connected by fasteners 20, and the fasteners 20 can be bolts. The fasteners 20 pass through the second connection holes 19 and are connected to the housing and the support feet 17, and the frame 3 is connected to the support feet 17 through the support legs 18, and the housing is located between the support legs 18 and the support feet 17. In order to improve the connection strength between the support legs 18 and the frame 3, a reinforcement structure is provided between the support legs 18 and the frame 3, and the reinforcement structure can be a reinforcement rib plate, and the reinforcement structure is connected to the support legs 18 by welding or riveting.

[0040] The force-bearing principle of the present invention: the upper end face 5 of the support member 4 is in contact with the inner wall at the top of the casing 1, and the lower end face 6 is in contact with the top of the frame 3. When the top of the casing 1 is subjected to external force, the support member 4 can withstand both pressure and tension. The self-weight of the electric energy generating device 2 and the external force on the casing 1 can be directly transmitted to the support feet 17 at the bottom of the casing through the support legs 18 at the bottom of the frame 3. It has the best structural strength and can effectively prevent the casing 1 from being subjected to force. The top of the metal frame 3 is connected to the root of the handle 14 at the top of the casing 1 through the metal support member 4. When the present invention is lifted with the handle 14, the support member 4 can withstand all the weight of the electric energy generating device 2, effectively preventing the casing 1 from being subjected to force, and has the best connection strength. Therefore, the patent design allows the use of a plastic casing with lower strength.

[0041] In summary, the present invention designs a special connection structure between the power generating device 2 and the top and bottom of the casing 1, fixes the power generating device 2 through the metal frame 3, and the metal frame 3 is connected to the root of the top handle 14 of the casing 1 through the metal support 4 at the top, and is connected to the support feet 17 at the bottom of the casing 1 through the support legs 18 at the bottom of the metal frame 3, thereby ensuring that the power generating device 2 can achieve a high-strength connection with the top and bottom stress-bearing parts of the casing 1. Since the strength of the casing 1 has no effect on the strength of its connection structure, this patent allows the use of a plastic casing with lower strength. The weight and cost of the plastic casing are much lower than those of the metal casing. The power supply equipment designed using this patent has the obvious advantages of high strength, light weight, low cost and beautiful appearance, and is very suitable for application in various types of portable power supply equipment products, with obvious technical advantages.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An internal connection structure of a portable power supply device, comprising a housing and an electric energy generating device, characterized in that: It also includes a frame, the electric energy generating device is arranged inside the frame, the electric energy generating device is connected to the casing through the frame, and the casing is used to enclose the electric energy generating device and the frame; a handle is arranged on the top of the casing, and the top of the casing is connected to the frame through a plurality of mutually parallel supporting members, and the top of the supporting member and the top of the casing, and the bottom of the supporting member and the top of the frame are detachably connected through a threaded connection structure.

2. The internal connection structure of a portable power supply device according to claim 1, characterized in that: The top and bottom of the support member are respectively provided with an upper end surface and a lower end surface, each of which is provided with a threaded hole, the top of the casing is provided with a casing table top, the casing table top is provided with a first connecting hole, the screw passes through the first connecting hole and is connected with the threaded hole on the upper end surface of the support member, the top of the frame is provided with a frame table top, the frame table top is provided with a stud, and the stud is connected with the threaded hole on the lower end surface of the support member.

3. The internal connection structure of a portable power supply device according to claim 2, characterized in that: A pit structure is provided on the top of the casing, the casing table is provided on the inner wall of the pit structure, the head of the screw is located in the recess of the pit structure, the head of the screw is fitted with the outer wall of the pit structure, and the inner wall of the pit where the casing table is located is fitted with the upper end surface of the support.

4. The internal connection structure of a portable power supply device according to claim 3, characterized in that: The handle is connected to the top of the housing through a pressing block, and an extension structure made of rubber is arranged on the pressing block. The extension structure covers the screw head so that it is invisible from the appearance.

5. The internal connection structure of a portable power supply device according to claim 1, characterized in that: The bottom of the housing is provided with a plurality of supporting feet, the bottom of the frame is provided with a plurality of supporting legs, the supporting legs are provided with second connecting holes, and the second connecting holes are located directly above the supporting feet; The support legs and support feet are connected by fasteners, and the fasteners pass through the second connecting holes and are connected to the casing and the support feet. The frame is connected to the support feet through the support legs, and the casing is located between the support legs and the support feet.

6. The internal connection structure of a portable power supply device according to claim 5, characterized in that: A reinforcement structure is provided between the support leg and the frame, and the reinforcement structure is connected to the support leg by welding or riveting.

7. The internal connection structure of a portable power supply device according to claim 5, characterized in that: The housing comprises an upper housing and a lower housing, the upper housing is connected to the lower housing via a connecting piece, the handle is connected to the top of the upper housing, and the supporting foot is connected to the bottom of the lower housing.

8. The internal connection structure of a portable power supply device according to claim 7, characterized in that: The upper housing and the lower housing are made of plastic material, the frame and its supporting legs are made of metal plates, and the supporting feet are made of soft material.

9. The internal connection structure of a portable power supply device according to claim 2, characterized in that: The frame table top is a planar structure at the top of the frame. The roots of the studs on the frame table top are connected to the top of the frame by riveting or welding. The frame table top is fitted with the lower end surface of the support.

10. The internal connection structure of a portable power supply device according to claim 1, characterized in that: The support member is a polygonal columnar structure and is made of metal material.

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