The snap-fit door panel structure of the generator set
By combining the elastic snap-fit strip with the guide cavity's limiting stop and the double locking structure, the problem of loosening and falling off of the generator set door panel structure under vibration environment is solved, achieving rapid self-locking and safe and reliable door panel connection.
Patent Information
- Application Number
- CN202522624501.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-11
AI Technical Summary
The existing generator set door panel structure is cumbersome to install and disassemble, requires tools, and is prone to loosening, making abnormal noises, or falling off in vibration environments. It lacks elastic compensation capabilities, which affects maintenance efficiency and safety.
The door panel utilizes a combination of a flexible snap-fit strip and a guide cavity limit stop, along with a dual locking structure consisting of a front buckle and a ball-head locking post, to achieve adaptive insertion and automatic locking, thereby enhancing the stability and safety of the door panel.
It achieves rapid self-locking of the door panel, preventing loosening and falling off, improving operational convenience and safety reliability, adapting to the vibration conditions of the generator set, and simplifying the maintenance process.
Smart Images
Figure CN224943600U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of generator set technology, specifically relating to a snap-fit door panel structure for a generator set. Background Technology
[0002] During long-term operation, generator sets require frequent internal structural inspections, maintenance, and cleaning. To facilitate access for maintenance personnel, the generator set casing typically features multiple access panels. Existing panels are mostly secured with bolts, hooks, or simple pins; however, these methods often require tools for installation and removal, are cumbersome, and are not conducive to rapid maintenance outdoors or in confined spaces. Furthermore, the significant vibrations during generator set operation can easily lead to loosening, abnormal noises, or even panel detachment, posing a safety hazard.
[0003] Existing door panel fastening methods primarily rely on rigid fixing structures, lacking elastic compensation capabilities. Under repeated door opening and closing or machine vibration, the fasteners are prone to wear, leading to unstable fastening. Furthermore, many structures require simultaneous operation on multiple locking points or bolts during disassembly, which is not only time-consuming and labor-intensive but also prone to component damage due to improper operation. In addition, some fastening structures lack sufficient guidance during insertion, resulting in poor assembly feel, high frictional resistance, and a tendency to jam, which is detrimental to improving assembly efficiency and product quality. Utility Model Content
[0004] To address the aforementioned problems, this utility model provides a snap-fit door panel structure for a generator set, comprising a generator set housing and a door panel. A snap-fit assembly is provided between the generator set housing and the door panel. The snap-fit assembly includes a first snap-fit member disposed on one side of the generator set housing and a second snap-fit member disposed on the side of the door panel. The first snap-fit member has an elastically deformable snap-fit strip plate, which is formed by bending and can spring upward in a free state. The second snap-fit member has a guide cavity for inserting the elastic snap-fit strip plate, and an inlet slot that mates with the elastic snap-fit strip plate is provided at the entrance of the guide cavity. The second snap-fit member forms a limiting stop within the guide cavity to secure the upper end of the elastic snap-fit strip plate after insertion. The second snap-fit member has a vertically movable reset holding member, which can bend the elastic snap-fit strip plate during operation to release its snap-fit relationship with the limiting stop, thereby achieving separation of the first snap-fit member and the second snap-fit member.
[0005] Preferably, the front end of the first fastening member is hinged with a front fastening ring, the center of which is formed with a fastening hole, and the side of the second fastening member is provided with a ball head locking post that can be inserted into the fastening hole.
[0006] Preferably, the upper surface of the guide cavity of the second fastener is inclined in the front-back direction, and the bottom of the guide cavity is provided with a lubricating coating.
[0007] Preferably, the reset holding member includes a pressing body disposed inside the guide receiving cavity and an outer pressing block disposed above it and extending from the outside of the second fastener. The lower part of the pressing body abuts against the upper surface of the elastic snap-fit strip plate. A connecting block is provided between the pressing body and the outer pressing block. A limiting sliding hole is provided above the guide receiving cavity, and the connecting block is slidably disposed in the limiting sliding hole.
[0008] Preferably, a diffuser plate is provided on the outer side of the deflector blade and extending along the length of the deflector blade. The outer edge of the diffuser plate has an arc-shaped structure so that the airflow forms a smooth diffusion channel when passing through the outer side of the deflector blade. A finger pressure groove is formed on the upper surface of the outer press block.
[0009] The advantages of this utility model are: 1. This solution achieves self-adaptive insertion and automatic locking by using a flexible snap-fit strip in conjunction with a limiting stop within the guide cavity. After insertion, the flexible strip automatically springs back and engages with the limiting stop, enabling the door panel to self-lock during the pushing and closing process, eliminating the need for screws or tools.
[0010] 2. This solution uses a front-mounted buckle and ball-head locking post to form a double locking structure, which can effectively prevent the door panel from loosening or falling off under generator set vibration conditions, greatly improving the safety and reliability of operation.
[0011] 3. The upper surface of the guide cavity in this design is designed with a front-to-back inclined shape. Combined with the lubricating coating at the bottom of the cavity, this makes the insertion of the elastic snap-fit strip smoother and less prone to jamming. Attached Figure Description
[0012] Figure 1 This is a structural diagram of the first and second fastening components of this utility model.
[0013] Figure 2 This is a cross-sectional view of the first and second fastening components of this utility model.
[0014] Figure 3 This is a structural diagram of the unit's outer casing and door panel of this utility model.
[0015] In the diagram: 1 Unit casing, 2 Door panel, 3 First fastener, 4 Second fastener, 5 Elastic snap-fit strip, 6 Guide cavity, 7 Inlet slot, 8 Limiting stop, 9 Reset retaining element, 10 Front buckle, 11 Fastening hole, 12 Ball head retainer, 13 Lubricating coating, 14 Pressing body, 15 External push block, 16 Connecting block, 17 Limiting sliding hole, 18 Finger pressure groove. Detailed Implementation
[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0017] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 a connection within two components. Simultaneously, when an component is referred to as "fixed to" or "equipped on" another component, it can be directly on the other component or may have an intervening component present. When an component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present. When an component is referred to as "fixedly connected to" another component, it can be a common fixed connection method such as welding, bolting, or gluing. In short, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0019] Example 1, such as Figure 1-3 As shown, a snap-fit door panel structure for a generator set includes a generator set housing 1, first snap-fit members 3 disposed on both sides of the generator set housing 1, and second snap-fit members 4 installed on the side edges of the door panel 2. The first snap-fit members 3 are fixedly installed on the side frame of the generator set housing 1, and their main body is made of metal sheet by stamping. To achieve the snap-fit function, one side of the first snap-fit member 3 extends forward to form an elastic snap-fit strip 5. This elastic strip 5 is formed by a bending process, so that it naturally springs upward. The elastic strip 5 has a certain longitudinal length and width, and the bent part allows it to bend downward when subjected to external force, and after the external force is released, it can return to the upward spring-like state by relying on the elasticity of the sheet itself. This structure ensures that the first snap-fit member 3 is easy to bend during the insertion action, and can quickly spring back and reliably snap into the limiting structure after being inserted into place.
[0020] The second fastener 4, located on the side edge of the door panel 2, serves as a locking end that engages with the first fastener 3. Its overall structure is a hollow box shape. The second fastener 4 has a guide cavity 6 facing the first fastener 3 for the insertion of the elastic snap-fit strip 5. An inlet slot 7 is provided at the entrance of the guide cavity 6. The height of this slot is slightly greater than the thickness of the elastic snap-fit strip 5 in its free state, forcing the strip to be forced downwards during insertion, thus allowing it to smoothly enter the guide cavity 6. To further facilitate the insertion process, the upper surface of the guide cavity 6 is inclined at a certain angle along the front-to-back direction, allowing the elastic snap-fit strip 5 to slide naturally along the inclined surface without jamming during insertion. Simultaneously, the bottom of the cavity is coated with a lubricating coating 13, such as a thin layer of polytetrafluoroethylene with a low coefficient of friction, which further reduces metal-to-metal contact friction, improving the insertion feel and lifespan.
[0021] The second fastening member 4 forms a limiting stop 8 inside the guide cavity 6. This stop is located at the upper front end of the cavity and provides a locking effect after the elastic locking strip 5 is inserted into place. When the elastic strip is pressed into the guide cavity and slides deeper into the cavity, the bent part gradually releases the pressure, and the upper end of the elastic strip returns to its elastic state. Its upper edge will automatically lock into the lower part of the limiting stop 8, thereby achieving a reliable locking connection between the first fastening member 3 and the second fastening member 4. The limiting stop 8 adopts a right-angle step structure rather than a smooth rounded corner design, making it less likely for the upper end of the elastic strip to slip when subjected to external force disturbance, thereby improving the locking reliability and maintaining stability even under long-term vibration conditions generated by generator operation.
[0022] To prevent the door panel 2 from opening accidentally, this embodiment provides a front-mounted retaining ring 10 at the front end of the first retaining member 3. This retaining ring is hinged to the first retaining member 3 via a pivot and can be rotated around the hinge point. A retaining hole 11 is formed in the center of the retaining ring, which engages with a ball-head locking post 12 on the side of the second retaining member 4. When the door panel 2 is closed, the ball-head locking post 12 inserts into the retaining hole 11, forming a second layer of fixing structure. The head of the ball-head locking post 12 is spherical or crown-shaped, and its size is slightly larger than the retaining hole 11, generating a certain elastic pressure during fastening and enhancing the locking effect. This double-fastening method can minimize the risk of the door panel 2 loosening and falling off under vibration conditions, improving the operational safety of the unit.
[0023] To facilitate the disassembly of the door panel 2, the second fastener 4 is equipped with a resetting retaining member 9 that can slide up and down. This retaining member includes a pressing body 14 disposed inside the guide receiving cavity 6 and an outer pressing block 15 located above it and protruding to the outside of the second fastener 4. The lower end face of the pressing body 14 abuts against the upper surface of the elastic locking strip 5, and the pressing body 14 and the outer pressing block 15 are connected by a connecting block 16. The top of the second fastener 4 is provided with a vertical limiting sliding hole 17, through which the connecting block 16 passes, making the pressing body 14 and the outer pressing block 15 form an integral sliding structure. Normally, the pressing body 14 remains in an upward state within the hole, with a slight gap between it and the elastic locking strip 5, which does not affect the rebound action of the locking strip. When disassembling the door panel 2, the user only needs to press the outer button 15 to drive the connecting block 16 and the pressing body 14 to move downward, so that the pressing body 14 presses down on the elastic strip, forcing the upper part of the strip to disengage from the limit stop 8, thereby releasing the fastening relationship and allowing the door panel 2 to be pulled outward.
[0024] The upper surface of the outer button 15 is designed with acupressure grooves 18. These grooves have an ergonomic shape, allowing users to apply force accurately when pressing and preventing fingertips from slipping. The acupressure grooves 18 can be elongated, arc-shaped, or inverted trapezoidal recesses, with smooth edge transitions to enhance tactile feel and make operation more intuitive.
[0025] In this embodiment, during installation, the operator only needs to push the door panel 2 towards the unit housing 1. As the door panel 2 moves, the second fastening member 4 aligns with the position of the first fastening member 3. The front end of the elastic locking strip 5 enters the inlet slot 7 of the second fastening member 4 and is pressed and folded by the inclined surface of the guide cavity 6. As the pushing action continues, the strip slides deeper into the cavity, the bent part gradually regains its elasticity, its upper end springs out and finally locks into the bottom of the limiting stop 8, realizing the fastening action. At the same time, the front buckle 10 at the front end of the first fastening member 3 rotates during the closing of the door panel 2, so that the fastening hole 11 aligns with the ball head locking post 12. When further closing pressure is applied, the ball head locking post 12 inserts into the fastening hole 11 to form a second locking, so that the door panel 2 is firmly closed.
[0026] During disassembly, the operator presses the outer pressing block 15 on the outside of the second fastening member 4 with their fingers. The outer pressing block 15 moves downward and drives the pressing body 14 to press against the upper surface of the elastic locking strip 5, causing the upper end of the strip to be pressed downward and disengage from the limiting stop 8. At this time, the operator slightly pulls the door panel 2 outward to disengage the first fastening member 3 from the second fastening member 4 and fully open the door panel 2. If it is necessary to completely disassemble the door panel 2, the operator flips the front fastening ring 10 and releases it from the ball head locking post 12 to complete the release of the second fastening. The entire operation process does not require tool assistance and can be completed quickly, making it particularly suitable for equipment environments such as generator sets that require frequent maintenance.
[0027] The snap-fit door panel 2 structure in this embodiment has advantages such as quick assembly, convenient disassembly, shock resistance, anti-detachment, smooth guidance, and comfortable operation. The elastic snap-fit strip 5 used in the structure not only compensates for installation errors but also maintains its elasticity during repeated operations; the double snap-fit structure significantly improves safety; the guide cavity 6 and lubricating coating 13 make installation smoother; and the reset holding member 9 and finger pressure groove 18 design enhance the ergonomic operating experience.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A snap-fit door panel structure for a generator set, characterized in that: The unit includes a housing (1) and a door panel (2). A fastening assembly is provided between the housing (1) and the door panel (2). The fastening assembly includes a first fastening member (3) disposed on one side of the housing (1) and a second fastening member (4) disposed on the side of the door panel (2). The first fastening member (3) is provided with an elastic snap-fit strip (5) that can be elastically deformed. The elastic snap-fit strip (5) is formed by bending and can spring upward in a free state. The second fastening member (4) has a guide receiving cavity inside for the elastic snap-fit strip (5) to be inserted. 6), and an inlet slot (7) that cooperates with the elastic snap-fit strip (5) is provided at the entrance of the guide cavity (6). The second fastener (4) forms a limit stop (8) in the guide cavity (6) for securing the upper end of the elastic snap-fit strip (5) after it is inserted. The second fastener (4) is provided with a vertically movable reset holding member (9). The reset holding member (9) can press and fold the elastic snap-fit strip (5) during operation to release its snap-fit relationship with the limit stop (8), thereby realizing the separation of the first fastener and the second fastener.
2. The snap-fit door panel structure of the generator set according to claim 1, characterized in that: The front end of the first fastener (3) is hinged with a front fastener (10), and a fastening hole (11) is formed in the center of the front fastener (10). The side of the second fastener (4) is provided with a ball head locking post (12) that can be inserted into the fastening hole (11).
3. The snap-fit door panel structure of the generator set according to claim 2, characterized in that: The upper surface of the guide cavity (6) of the second fastener (4) is inclined in the front-back direction, and the bottom of the guide cavity (6) is provided with a lubricating coating (13).
4. The snap-fit door panel structure of the generator set according to claim 3, characterized in that: The reset holding member (9) includes a pressing body (14) disposed inside the guide receiving cavity (6) and an outer pressing block (15) disposed above it and extending from the outside of the second fastener. The lower part of the pressing body (14) abuts against the upper surface of the elastic snap-fit strip plate (5). A connecting block (16) is provided between the pressing body (14) and the outer pressing block (15). A limiting sliding hole (17) is provided above the guide receiving cavity (6), and the connecting block (16) is slidably disposed in the limiting sliding hole (17).
5. The snap-fit door panel structure of the generator set according to claim 4, characterized in that: The upper surface of the outer pressing block (15) is formed with a finger pressure groove (18).