Back frame for garden machinery gasoline engine

Abstract

The utility model discloses a kind of backrest for garden machinery gasoline engine, it is related to garden machinery technical field, the utility model includes backrest main body, backrest main body side is connected with backplate, and backplate side is connected with outer sleeve, support plate is connected in the middle inside outer sleeve, and support plate side is connected with protruding block and first buffer pad, support plate other side is connected with second buffer pad;Outer sleeve outer surface and back are all connected with limiting belt.The utility model is provided with outer sleeve, limiting belt, magic tape hook face, first magic tape hair face, support plate, protruding block and first buffer pad, on the one hand, it can be limited by the stable limiting of limiting belt to outer sleeve by the adhesion of magic tape hook face and first magic tape hair face, so that outer sleeve and backplate keep reliable connection, on the other hand, support plate can provide stable support for protruding block and first buffer pad, protruding block can drive first buffer pad and outer sleeve corresponding side form bulge structure;Reduce vibration transmission, improve comfort.

Description

Technical Field

[0001] This utility model relates to the field of garden machinery technology, specifically a back frame for a gasoline engine in garden machinery. Background Technology

[0002] Garden machinery is an indispensable tool in garden maintenance and greening operations, widely used in parks, courtyards, municipal green belts, and other scenarios. It is mainly used for tasks such as vegetation trimming, weeding, and shrub shaping. Common types include lawnmowers, hedge trimmers, and lawn mowers. These machines need to be adapted to different operational needs; some are designed for portability to improve mobility and adapt to large-area or complex terrain gardening scenarios.

[0003] Backpack gasoline engines are commonly used power components in garden machinery, often paired with equipment such as backpack gasoline lawnmowers. Their core advantage lies in freeing operators from the constraints of cables and push-type structures. Through lightweight power design, they allow operators to carry them and move around flexibly. Because backpack gasoline engines have a certain weight, they need to be used with a back frame for stable support, enabling operators to complete long-term work by bearing the load on their shoulders. This is especially suitable for large gardens, orchards, and other scenarios requiring extensive mobile pruning.

[0004] The back panels of existing backpack frames are mostly made of wood or plastic, with only a layer of artificial leather or other fabric stitched to the surface, resulting in a relatively simple cushioning and comfort design. Although gasoline engine mounting brackets usually have a basic shock-absorbing structure, some of the vibration generated during operation will still be directly transmitted to the operator's lower back through the main body of the backpack frame and the back panel. In addition, garden operations are generally characterized by "large working area and long single working time". With long-term use, continuous vibration transmission can easily cause discomfort such as soreness and fatigue in the lower back of the operator, affecting work efficiency and user experience. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a back frame for a gasoline engine in garden machinery to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a back frame for a gasoline engine of garden machinery, comprising a back frame body, a back plate connected to one side of the back frame body, and an outer cover connected to one side of the back plate, a support plate connected in the middle inside the outer cover, and a protrusion and a first buffer pad connected to one side of the support plate, and a second buffer pad connected to the other side of the support plate; a limiting strap is connected to the outer surface and back of the outer cover, and a first hook and loop fastener and a second hook and loop fastener are respectively fixed to both sides of the limiting strap; two hook and loop fastener hooks are connected to the other side of the back plate.

[0007] By adopting the above technical solution, the back panel provides the installation base for the outer cover. The outer cover separates the first buffer pad and the second buffer pad through the internal support plate, forming a structure layout with segmented buffering on both sides. This not only provides a carrier for the subsequent shock absorption function, but also reserves space for switching of the buffer surface through the cooperation of the limiting strap and Velcro. At the same time, the connection between the protrusion and the first buffer pad lays the foundation for the formation of the auxiliary massage structure. The overall structure takes into account both support stability and functional adaptability.

[0008] Furthermore, the limiting band is detachably connected to the back panel via a hook and loop fastener, a first hook and loop fastener, and a second hook and loop fastener.

[0009] By adopting the above technical solution and taking advantage of the adhesive properties of Velcro, the assembly or separation of the limiting strap and the back panel can be completed without the aid of tools. On the one hand, the first cushioning pad side and the second cushioning pad side can be quickly switched according to the usage needs to adapt to the comfort needs of different scenarios. On the other hand, the detachable design facilitates the cleaning or replacement of the cover and cushioning pads in the later stages, improving the maintenance convenience of the back frame.

[0010] Furthermore, the outer cover is made of polyester fiber 3D mesh fabric, and the first and second cushioning pads are both made of high-density memory foam.

[0011] By adopting the above technical solutions, the polyester fiber 3D mesh fabric has a porous and breathable structure, which can reduce the stuffiness of the lower back when operators carry it for a long time and avoid discomfort caused by sweat accumulation; the high-density memory foam has excellent elasticity and deformation recovery ability, which can effectively absorb the vibration force transmitted during the operation of the gasoline engine, reduce the transmission of vibration to the lower back, and the soft material can conform to the curves of the human body, improving contact comfort.

[0012] Furthermore, the bumps are provided in multiple forms, and the multiple bumps are distributed in a rectangular array.

[0013] By adopting the above technical solution, the rectangular array of protrusions can provide uniform support for the first buffer pad, making the raised structure formed by the first buffer pad and the outer cover on the corresponding side neatly distributed, avoiding uneven force caused by local protrusions being too high or too low; at the same time, the evenly distributed protrusions can make the massage effect more comprehensive, reduce fatigue caused by long-term pressure on a single part, and adapt to long-term work scenarios.

[0014] Furthermore, both one side of the first buffer pad and one side of the outer jacket are provided with multiple protrusions, and the multiple protrusions are distributed in a rectangular array, with the positions of the multiple protrusions corresponding to the positions of the multiple bumps.

[0015] By adopting the above technical solution, the protrusion can lift the first buffer pad and the outer sleeve to form a regular raised structure, which not only provides a structural basis for subsequent auxiliary massage to cooperate with the vibration of operation and the bumps of walking, but also allows the shock absorption effect of the first buffer pad to be evenly transmitted through the protrusion, avoiding the vibration force from being concentrated in a local area and improving the overall shock absorption.

[0016] Furthermore, both the support plate and the protrusion are made of ABS or GF-reinforced PP.

[0017] By adopting the above technical solutions, ABS material has good rigidity and impact resistance, while GF reinforced PP has advantages in strength and lightweight. Both materials can serve as a separator and a continuation of the first and second buffer pads.

[0018] Furthermore, a gasoline engine mounting bracket is connected to one side of the top of the main body of the back frame, a first hanging ring is connected to both the outer surface and the back of the main body of the back frame, and a second hanging ring is connected to the top of the main body of the back frame.

[0019] By adopting the above technical solution, the gasoline engine mounting bracket can stably install the gasoline engine on the main body of the back frame; the first and second hanging rings provide connection points for the shoulder straps, and the operator can carry the back frame and gasoline engine on their back by cooperating with the shoulder straps and hanging rings, freeing them from the limitations of cables or hand-push structures and meeting the needs of large-scale movement in garden operations.

[0020] Furthermore, the hook and loop fastener is fixedly connected to the back plate using hot melt adhesive or epoxy AB adhesive.

[0021] By adopting the above technical solution, both hot melt adhesive and epoxy AB glue have strong bonding strength, which can firmly fix the hook and loop fastener to the back panel, preventing the hook and loop fastener from falling off due to vibration or pulling during operation, thereby ensuring the limiting effect of the limiting strap on the outer cover; at the same time, this fixing method is easy to operate and can be adapted to the assembly needs of different production scenarios, ensuring the consistency of connection during mass production.

[0022] Furthermore, the protrusion and the support plate are fixedly connected by integral injection molding.

[0023] By adopting the above technical solutions, one-piece injection molding can eliminate the assembly gap between the protrusion and the support plate, avoid loosening or separation during long-term use, and enhance the stability of the core support structure. At the same time, the one-piece molding process reduces the steps of assembling the protrusion separately, simplifies the production process, facilitates batch processing, and allows the force of the protrusion to be transferred to the support plate more directly, thereby improving support efficiency.

[0024] In summary, the present invention has the following main advantages: 1. This utility model, through the arrangement of an outer cover, a limiting strap, a hook and loop fastener, a first hook and loop fastener, a support plate, protrusions, and a first cushioning pad, achieves stable positioning of the outer cover by the hook and loop fasteners, ensuring a reliable connection between the outer cover and the back panel. Simultaneously, the support plate provides stable support for the protrusions and the first cushioning pad, and the protrusions can cause the first cushioning pad and the corresponding side of the outer cover to form a raised structure. Furthermore, the outer cover is made of 3D polyester fiber mesh fabric, which has excellent breathability, reducing the stuffiness in the lower back during prolonged wear. The first cushioning pad is made of high-density memory foam, providing excellent shock absorption. This reduces the transmission of vibration from the gasoline engine to the lower back, and the raised structure, combined with vibrations and walking bumps during operation, provides a simple massage to the operator's lower back, helping to relieve work fatigue and improve comfort. It reduces vibration transmission and enhances comfort. 2. This utility model, through the design of an outer cover, a limiting strap, a hook and loop fastener, a second hook and loop fastener, a support plate, and a second cushioning pad, allows for switching of the cushioning surface by adhering the hook and loop fasteners together. When the raised structure of the first cushioning pad causes discomfort due to prolonged contact, it can be easily switched to the second cushioning pad side. The surface of the second cushioning pad is relatively flat and is also made of high-density memory foam material, which can maintain a good shock absorption effect. Combined with the breathability of the outer cover, it can not only meet the comfort needs of operators in different usage scenarios, but also form a double cushioning effect with the first cushioning pad, further reducing the transmission of vibration to the waist and back, and is more suitable for the long-term carrying needs in garden operations; increasing the flexibility of use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the backplate structure of this utility model; Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A in the image; Figure 4 This is a schematic diagram of the cross-sectional structure of the first buffer pad of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the second buffer pad of this utility model.

[0026] In the diagram: 1. Back frame body; 2. Gasoline engine mounting bracket; 3. First hanging ring; 4. Second hanging ring; 5. Back plate; 6. Outer cover; 7. Limiting strap; 8. Velcro hook side; 9. First Velcro rough side; 10. Second Velcro rough side; 11. Support plate; 12. Protrusion; 13. First buffer pad; 14. Second buffer pad. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The embodiments of this utility model will be described below based on its overall structure.

[0029] Example 1:

[0030] A back frame for a gasoline engine in garden machinery, such as Figures 1-5As shown, the device includes a back frame body 1, a back plate 5 connected to one side of the back frame body 1, and an outer cover 6 connected to one side of the back plate 5. The outer cover 6 is made of polyester fiber 3D mesh fabric. A support plate 11 is connected to the middle of the inner side of the outer cover 6. A protrusion 12 and a first buffer pad 13 are connected to one side of the support plate 11. Both the support plate 11 and the protrusion 12 are made of ABS or GF-reinforced PP. Multiple protrusions 12 are provided and are distributed in a rectangular array. Multiple protrusions are provided on one side of the first buffer pad 13 and one side of the outer cover 6, and these protrusions are also distributed in a rectangular array. The positions of the multiple protrusions and the multiple protrusions 12 are... Correspondingly, a second cushioning pad 14 is connected to the other side of the support plate 11. Both the first cushioning pad 13 and the second cushioning pad 14 are made of high-density memory foam. The outer surface and back of the outer cover 6 are connected to a limiting strap 7. A first hook and loop fastener 9 and a second hook and loop fastener 10 are fixed to both sides of the limiting strap 7. Two hook and loop fastener hooks 8 are connected to the other side of the back plate 5. The limiting strap 7 is detachably connected to the back plate 5 via the hook and loop fastener hooks 8, the first hook and loop fastener 9, and the second hook and loop fastener 10. If the raised structure is needed for auxiliary massage and shock absorption, the user only needs to attach the first hook and loop fastener 9 of the limiting strap 7 to the back plate 5. The Velcro hooks 8 of the backplate 5 fit snugly, ensuring that the first cushioning pad 13 side of the outer cover 6 faces the operator's lower back. During operation, the vibration generated by the gasoline engine is initially buffered by the gasoline engine mounting bracket 2. The remaining vibration is transmitted to the backplate 5, and then through the second cushioning pad 14 and support plate 11 to the first cushioning pad 13. The high-density memory foam absorbs some of the vibration through its own deformation, further reducing the transmission to the lower back. At the same time, in conjunction with the bumps and vibrations caused by the operator walking, the raised structure on the side of the first cushioning pad 13 forms a gentle dynamic contact with the lower back, achieving a simple massage effect. As a result, it helps to relieve muscle fatigue during long hours of work. If the raised structure causes pressure and discomfort in the lower back due to prolonged use, the user can directly separate the first hook and loop side 9 of the limiting strap 7 from the hook side, flip the outer cover 6, and re-attach the second hook and loop side 10 of the limiting strap 7 to the hook and loop side 8, so that the second cushioning pad 14 of the outer cover 6 faces the lower back. The surface of the second cushioning pad 14 is relatively flat, and its high-density memory foam material can still maintain a good shock absorption effect, which can avoid continuous contact pressure from the raised structure and adapt to the different physical needs of operators or the comfort adjustment after long hours of work.

[0031] See Figure 1 In the above embodiment, a gasoline engine mounting base 2 is connected to the top side of the back frame body 1. A first hanging ring 3 is connected to the outer surface and back of the back frame body 1. A second hanging ring 4 is connected to the top of the back frame body 1. The gasoline engine needs to be installed on the gasoline engine mounting base 2 of the back frame body 1 through a threaded structure. The shoulder strap is connected through the first hanging ring 3 on the outer surface and back of the back frame body 1 and the second hanging ring 4 on the top, so that the operator can carry the back frame and the gasoline engine through his / her shoulders.

[0032] Example 2:

[0033] Based on the above embodiment one, in order to increase the stability of the buffer structure limit, the following settings are now adopted.

[0034] See Figure 2 and Figure 3 In the above embodiments, the hook and loop fastener 8 is fixedly connected to the back plate 5 by hot melt adhesive or epoxy AB glue, which makes it easy to fix the hook and loop fastener 8 to the side of the back plate 5 and effectively reduces the occurrence of hook and loop fastener 8 falling off.

[0035] Example 3:

[0036] Based on the above embodiment 1, in order to avoid the phenomenon of drop-off of protrusion 12, the following settings are now adopted.

[0037] See Figure 4 and Figure 5 In the above embodiments, the protrusion 12 and the support plate 11 are fixedly connected by integral injection molding to form an inseparable and sturdy structure, which makes it easy to process multiple protrusions 12 on the side of the support plate 11 and can prevent the protrusions 12 from falling off.

[0038] The implementation principle of this utility model is as follows: First, the gasoline engine needs to be installed on the gasoline engine mounting seat 2 of the back frame body 1 through the threaded structure. The shoulder strap is connected through the first hanging ring 3 on the back and the second hanging ring 4 on the top of the back frame body 1, so that the operator can carry the back frame and the gasoline engine through the shoulder. When in use, the user attaches the outer cover 6 to the side of the back panel 5 and uses the pre-set limiting straps 7 on the outer surface and back of the outer cover 6 to achieve positioning. The limiting straps 7 have a first hook and loop fastener 9 and a second hook and loop fastener 10 sewn on both sides respectively. By attaching the corresponding hook and loop fasteners to the hook and loop fasteners 8 on the back panel 5, the outer cover 6 can be precisely positioned. This connection is a detachable structure, and the position of the outer cover 6 can be flexibly adjusted or the buffer surface can be switched to prevent the outer cover 6 from shifting during operation. Inside the outer jacket 6, a support plate 11 is connected to the middle position. The support plate 11 and multiple protrusions 12 arranged in a rectangular array are integrally injection molded to form an inseparable and sturdy structure. The support plate 11 and the protrusions 12 are made of ABS or GF-reinforced PP, which have sufficient structural strength to support the cushioning components, the vibration force transmitted from the direction of the gasoline engine, and the pressure transmitted from the direction of the user carrying the jacket. The support plate 11 is tightly connected to the first cushioning pad 13 on one side and to the second cushioning pad 14 on the other side. The side of the first cushioning pad 13 facing the protrusion 12 and the side of the outer jacket 6 corresponding to the first cushioning pad 13 are provided with protrusions corresponding to the positions of the protrusions 12. The rigid support of the protrusions 12 will drive the protrusions of the first cushioning pad 13 and the outer jacket 6 to form a raised structure. At the same time, the first cushioning pad 13 and the second cushioning pad 14 are both made of high-density memory foam, which has excellent elasticity and shock absorption performance. The outer jacket 6 is made of polyester fiber 3D three-dimensional mesh fabric. Its porous structure can ensure air circulation and reduce the stuffiness of the lower back when the operator carries the jacket for a long time. In actual gardening operations, if the raised structure is needed to provide auxiliary massage and shock absorption, the user only needs to tightly attach the first Velcro surface 9 of the limiting strap 7 to the Velcro hook surface 8 of the back panel 5, so that the first cushioning pad 13 side of the outer cover 6 faces the operator's lower back. During operation, the vibration force generated by the gasoline engine is first initially buffered by the gasoline engine mounting base 2. The remaining vibration force is transmitted to the back panel 5, and then transmitted to the first cushioning pad 13 through the second cushioning pad 14 and the support plate 11. The high-density memory foam absorbs part of the vibration force through its own deformation, further reducing the transmission to the lower back. At the same time, in conjunction with the bumps and vibrations when the operator walks, the raised side of the first cushioning pad 13... The structure creates a gentle, dynamic contact with the lower back, providing a simple massage effect and helping to relieve muscle fatigue from prolonged work. If prolonged use of the raised structure causes pressure and discomfort in the lower back, the user can directly separate the first Velcro loop 9 from the hook side of the limiting strap 7, flip the outer cover 6, and reattach the second Velcro loop 10 from the hook side of the limiting strap 7 to the Velcro hook side 8, so that the second cushioning pad 14 of the outer cover 6 faces the lower back. The surface of the second cushioning pad 14 is relatively flat, and its high-density memory foam material can still maintain a good shock absorption effect, avoiding continuous contact pressure from the raised structure and adapting to the different ergonomic needs of operators or comfortable adjustments after long-term work.

[0039] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A back frame for a gasoline engine in garden machinery, comprising a back frame body (1), characterized in that: The back frame body (1) is connected to a back plate (5) on one side, and an outer cover (6) is connected to the back plate (5) on one side. A support plate (11) is connected in the middle inside the outer cover (6), and a protrusion (12) and a first buffer pad (13) are connected to one side of the support plate (11). A second buffer pad (14) is connected to the other side of the support plate (11). The outer surface and back of the outer cover (6) are connected to a limiting strap (7), and a first hook and loop fastener (9) and a second hook and loop fastener (10) are fixed on both sides of the limiting strap (7). Two hook and loop fastener hooks (8) are connected to the other side of the back plate (5).

2. The back frame for a gasoline engine in garden machinery according to claim 1, characterized in that: The limiting band (7) is detachably connected to the back plate (5) through the hook and loop fastener (8), the first hook and loop fastener (9), and the second hook and loop fastener (10).

3. The back frame for a gasoline engine in garden machinery according to claim 1, characterized in that: The outer cover (6) is made of polyester fiber 3D mesh fabric, and the first cushioning pad (13) and the second cushioning pad (14) are both made of high-density memory foam.

4. The back frame for a gasoline engine in garden machinery according to claim 1, characterized in that: The bumps (12) are provided in multiple ways, and the multiple bumps (12) are distributed in a rectangular array.

5. The back frame for a gasoline engine in garden machinery according to claim 4, characterized in that: Multiple protrusions are provided on one side of the first buffer pad (13) and one side of the outer jacket (6), and the multiple protrusions are distributed in a rectangular array, with the multiple protrusions corresponding to the positions of the multiple protrusions (12).

6. The back frame for a gasoline engine in garden machinery according to claim 4, characterized in that: The support plate (11) and the protrusion (12) are both made of ABS or GF reinforced PP.

7. The back frame for a gasoline engine in garden machinery according to claim 1, characterized in that: A gasoline engine mounting base (2) is connected to one side of the top of the back frame body (1), and a first hanging ring (3) is connected to both the outer surface and the back of the back frame body (1). A second hanging ring (4) is connected to the top of the back frame body (1).

8. The back frame for a gasoline engine in garden machinery according to claim 2, characterized in that: The hook and loop fastener (8) is fixedly connected to the back plate (5) by hot melt adhesive or epoxy AB adhesive.

9. The back frame for a gasoline engine in garden machinery according to claim 6, characterized in that: The protrusion (12) and the support plate (11) are fixedly connected by integral injection molding.

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