A mobile power device and assembly method

Abstract

The application discloses a mobile power supply device and an assembling method thereof. The mobile power supply device comprises a box cover, a buffer and a support. The box cover is provided with a buffer groove on one side facing a box body, and the buffer groove is arranged to cover the upper surface when the box cover is closed. The buffer is arranged in the buffer groove and is provided with a plurality of protruding parts arranged at intervals. The support is arranged in the buffer and comprises a transversely arranged beam body and a deformation part corresponding to each protruding part. The deformation part is arranged between the beam body and the protruding part, and the deformation part has a movement trend of deforming in the transverse direction after being compressed. On the one hand, when the plurality of protruding parts of the buffer are compressed, axial compression and transverse expansion can occur, so that the buffer avoids forming continuous contact with the box body with large rigidity on the whole surface, and the buffer stroke is increased and the instantaneous transmission of the impact load is reduced. On the other hand, through the support, the load originally concentrated on a single protruding part can be borne by multiple regions, so that the risk of local collapse of the buffer after long-term compression is reduced.

Description

Technical Field

[0001] This disclosure relates to the field of power supply structure technology, specifically to a mobile power supply device and its assembly method. Background Technology

[0002] To facilitate the carrying and transportation of portable power supplies, their casings are typically equipped with an openable lid. When closed, the lid covers the upper surface of the casing, reducing the possibility of external objects directly impacting the interfaces and switches. Inevitably, portable power supplies will be subjected to vibration, drops, or external pressure during handling or transportation. To reduce the impact on the casing, existing technology usually incorporates cushioning blocks made of sponge, foam, or rubber on the inside of the lid, which abut against the upper surface of the casing when the lid is closed.

[0003] In practical design, given the limited internal space of the enclosure and the thickness of the buffer block, it is difficult to simultaneously guarantee the buffering capacity and support stability of conventional buffer blocks. While using materials with high elasticity and low hardness can achieve a large compression stroke, it can also lead to skewing, collapse, and permanent compression deformation after prolonged pressure or repeated impacts. Conversely, using materials with higher hardness to improve support stability can easily transfer the impact load directly to the enclosure, increasing local contact pressure. Therefore, existing buffer blocks for mobile power supplies struggle to achieve both high stability and strong buffering capacity within limited installation space.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure. Summary of the Invention

[0005] The purpose of this disclosure is to provide a mobile power supply device and assembly method, as well as to improve buffering capacity and buffering stability.

[0006] Other features and advantages of this disclosure will become apparent from the following detailed description, or may be learned in part from practice of this disclosure.

[0007] According to one aspect of this disclosure, a mobile power supply device is provided, comprising: The box body has an interface and a switch on its upper surface; The lid is foldably mounted on the box body and has a buffer groove on one side facing the box body. The buffer groove is configured to cover the upper surface when the lid is closed. A buffer element is provided in the buffer groove, and a plurality of spaced protrusions are provided on one side facing the box body. The protrusions are configured to abut against the upper surface when the box lid is closed. The support, disposed in the buffer, includes a horizontally placed beam and a deformation part corresponding to each of the protrusions. The deformation part is disposed between the beam and the protrusion, and the deformation part has a tendency to deform laterally after being compressed.

[0008] In some embodiments of this disclosure, based on the foregoing scheme, the deformable part includes an annular part, the annular part having a notch formed at the position facing the protrusion, the two ends of the annular part at the notch having a tendency to move away from each other after being pressed, and the position of the annular part facing the beam body being connected to the beam body through a connecting part; Between two adjacent deformable portions, the two ends of the two deformable portions that are close to each other are connected.

[0009] In some embodiments of this disclosure, based on the foregoing scheme, between two adjacent deformable portions, a first connecting arm is connected to the end of one deformable portion near the end of the other deformable portion, and a second connecting arm is connected to the end of the other deformable portion near the end of one deformable portion. The end of the first connecting arm is connected to the end of the second connecting arm, and both the first connecting arm and the second connecting arm are inclined toward the beam in a direction away from the deformation part.

[0010] In some embodiments of this disclosure, based on the aforementioned scheme, the first connecting arm and the second connecting arm are integrally formed by an arc transition portion, and the included angle of the arc transition portion narrows after the deformed portion is compressed.

[0011] In some embodiments of this disclosure, based on the foregoing scheme, the buffer member forms a recess between two spaced protrusions, and the arc transition portion is located between the recess and the beam.

[0012] In some embodiments of this disclosure, based on the foregoing scheme, at least one switch is a rotary switch, and the rotary switch corresponds to at least one of the recesses, so that when the lid is closed, the rotary switch is covered by the corresponding recess, and the rotary switch and the corresponding recess are in clearance fit.

[0013] In some embodiments of this disclosure, based on the foregoing scheme, the deformable part includes a flexible ring, and a plurality of the flexible rings are sequentially connected; between two adjacent flexible rings, the outer ring walls of the two flexible rings are integrally formed; the beam abuts against the top of the flexible ring.

[0014] In some embodiments of this disclosure, based on the foregoing scheme, the deformable part includes an airbag, a plurality of airbags are arranged sequentially at intervals, and the beam abuts above the airbag.

[0015] In some embodiments of this disclosure, based on the foregoing scheme, the protrusions are formed on the buffer in multiple rows, with each row of protrusions being formed at equal intervals on the buffer; and between adjacent rows of protrusions, any two protrusions do not overlap in the column direction.

[0016] In some embodiments of this disclosure, based on the foregoing scheme, the protrusion is frustum-shaped, the first end of the protrusion is formed on the surface of the buffer member, the second end of the protrusion is configured to abut against the upper surface when the lid is closed, and the cross-sectional dimension of the second end is smaller than that of the first end.

[0017] In some embodiments of this disclosure, based on the foregoing scheme, the position where the beam body is connected or installed with the deformable part is a connection position, and a beam groove is provided between two adjacent connection positions. The beam groove passes through the beam body and extends between two adjacent connection positions.

[0018] In some embodiments of this disclosure, based on the foregoing scheme, the buffer is formed on the outside of the bracket by overmolding.

[0019] According to one aspect of this disclosure, a method for assembling a portable power supply device is provided, for assembling a portable power supply device as described above, comprising: Provide a support frame, and wrap the support frame with a molded rubber cushioning component; The cushioning element is embedded in the cushioning groove of the box lid; Assemble the lid onto the body of the box to obtain a portable power supply device.

[0020] As can be seen from the above technical solutions, the mobile power supply device and assembly method in the exemplary embodiments of this disclosure have at least the following advantages and positive effects: The portable power supply device and assembly method provided in this application have a bracket disposed inside a buffer component, allowing the bracket to provide support from within the buffer component without directly contacting the upper surface of the housing body. The buffer component covers the bracket and separates it from the housing body, allowing the buffer component to absorb small vibrations initially, while the bracket participates in bearing loads when the buffer component undergoes significant deformation. This balances the flexible buffering effect of the buffer component with the structural support effect of the bracket. On one hand, the buffer component has multiple spaced protrusions on the side facing the housing body, with each protrusion abutting against the upper surface of the housing body when the lid is closed, thus forming multiple buffer contact points between the lid and the housing body. The spacing between adjacent protrusions allows for deformation space for the protrusions and surrounding buffer material, enabling axial compression and lateral expansion when the protrusions are compressed. This avoids a rigid, continuous contact between the buffer component and the housing body with its entire surface, which helps increase the buffer stroke and reduce the instantaneous transmission of impact loads. On the other hand, multiple deformation sections correspond to multiple protrusions and are connected to the transverse beam. When one of the protrusions is subjected to significant pressure, the protrusion transfers the load to the beam through its corresponding deformation section. The beam then transfers the load laterally to other deformation sections and other areas of the buffer, so that the load originally concentrated on a single protrusion is shared by multiple areas. The deformation sections, in conjunction with the deformation sections, at least partially convert the vertical pressure into lateral bending or unfolding deformation, reducing the possibility of the buffer collapsing after long-term pressure and improving stability. Therefore, this mobile power supply device and assembly method have the advantages of high stability and strong buffering capacity.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] The structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0024] Figure 1This is a schematic diagram of the first state structure of the mobile power supply device in this embodiment; Figure 2 This is a schematic diagram of the second state structure of the mobile power supply device in this embodiment; Figure 3 This is a front view of the buffer structure in this embodiment; Figure 4 This is a partial structural schematic diagram of the portable power supply device in this embodiment; Figure 5 This is a partial cross-sectional structural diagram of the mobile power supply device in this embodiment; Figure 6 for Figure 5 A magnified schematic diagram of the structure at point A; Figure 7 for Figure 5 A magnified schematic diagram of the structure at point B; Figure 8 This is another structural schematic diagram of the bracket in this embodiment; Illustrations: 100, Box body; 200, Box cover; 201, Buffer groove; 300, Buffer component; 310, Protrusion; 320, Recess; 400, Support; 410, Beam; 411, Connection position; 412, Beam groove; 420, Deformable part; 421, Annular part; 422, Notch; 430, Connecting part; 441, First connecting arm; 442, Second connecting arm; 443, Arc transition part; 450, Flexible ring; 500, Rotary switch. Detailed Implementation

[0025] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0027] The technical solution of this application will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1: The portable power supply device provided in this embodiment is suitable for engineers to carry while working outdoors. Engineers can use this portable power supply device to power the equipment to be maintained, facilitating maintenance. In this embodiment, by improving the structure of the portable power supply device, its overall buffering capacity and long-term stability are enhanced within a limited size.

[0029] like Figure 1 and Figure 2 As shown, the portable power supply device in this embodiment includes a case body 100 and a case cover 200. The case body 100 can be made of metal, engineering plastic, or fiber-reinforced composite material to accommodate internal components while withstanding external forces generated during transportation. The upper surface of the case body 100 can be understood as the surface of the case cover 200 that faces the operator when opened and is used to install operating devices. The upper surface of the case body 100 is provided with interfaces and switches. The interior of the case body 100 is provided with components such as batteries and voltage regulator modules to ensure that the portable power supply device can stably output electrical energy. The specific components used can be selected by those skilled in the art and are well known to those skilled in the art; this embodiment does not limit them. The interfaces include, but are not limited to, DC interfaces, AC interfaces, USB interfaces, Type-C interfaces, etc. The specific interfaces used can be selected by those skilled in the art and are well known to those skilled in the art; this embodiment does not limit them. The switches include, but are not limited to, rotary switches 500, push switches, touch switches, etc. The specific switches used can be selected by those skilled in the art and are well known to those skilled in the art; this embodiment does not limit them.

[0030] like Figure 1 and Figure 2 As shown, the lid 200 is closable and mounted on the box body 100. A buffer groove 201 is provided on one side facing the box body 100. The buffer groove 201 is configured to cover the upper surface when the lid 200 is closed. Specifically, one side of the lid 200 can be connected to the box body 100 via a hinge, allowing the lid 200 to rotate relative to the box body 100. The other side of the lid 200 can be locked to the box body 100 via a latch. In other embodiments, the lid 200 can also be detachably connected, slidably connected, or other connection methods that can switch between an open state and a closed state. Figure 1 This shows the first state where the lid 200 is closed on the box body 100. Figure 2The diagram shows a second state where the lid 200 is open relative to the body 100. Furthermore, "covering" refers to the buffer groove 201 being positioned above the upper surface of the body 100 along with the lid 200, covering the area where the interface and switch are located; it is not required that the wall of the buffer groove 201 form a sealed contact with the upper surface of the body 100. The buffer groove 201 can be formed by a recess in the inner wall of the lid 200 away from the body 100, or it can be formed by a surrounding edge, reinforcing rib, or inner lining plate provided on the inner side of the lid 200.

[0031] like Figures 2 to 5 As shown, the portable power supply device also includes a buffer 300 and a support 400. The buffer 300 is a component capable of recovering deformation under pressure or impact, and can be made of rubber, silicone, thermoplastic elastomer, polyurethane elastomer, or foam material. The buffer 300 is disposed in the buffer groove 201, and the outer periphery of the buffer 300 can be adapted to the groove wall of the buffer groove 201. It can be held in the buffer groove 201 by means of embedding, interference fit, bonding, snap-fit, or fastener connection. The buffer 300 can fill all or part of the depth of the buffer groove 201, as long as the buffer 300 is located between the lid 200 and the upper surface of the body 100 when the lid 200 is closed. The buffer 300 has a plurality of spaced protrusions 310 on the side facing the body 100, and the protrusions 310 are configured to abut against the upper surface when the lid 200 is closed. The support 400 is disposed in the buffer 300 and includes a horizontally placed beam 410 and a deformation part 420 provided for each corresponding protrusion 310. The deformation part 420 is disposed between the beam 410 and the protrusion 310 and has a tendency to deform laterally after being compressed.

[0032] As can be seen from the above embodiments, the cover 200 can provide external shielding for the area where the interface and switch are located, and the buffer groove 201 can provide a defined installation and accommodating space for the buffer member 300, restricting the movement of the buffer member 300 relative to the cover 200, so that the external force on the cover 200 can be transmitted to the box body 100 through the buffer member 300, preventing the cover 200 from directly impacting the upper surface of the box body 100. On this basis, the buffer member 300 is filled in the buffer groove 201, so that the buffer member 300 can be positioned and constrained by the groove wall of the buffer groove 201; the buffer member 300 is provided with multiple spaced protrusions 310 on the side facing the box body 100, and each protrusion 310 abuts against the upper surface of the box body 100 when the cover 200 is closed, thereby forming multiple buffer contact positions between the cover 200 and the box body 100. The spacing between adjacent protrusions 310 allows for deformation space for the protrusions 310 and the surrounding buffer material, enabling the protrusions 310 to undergo axial compression and lateral expansion when compressed. This prevents the buffer 300 from forming a rigid continuous contact with the box body 100 with its entire surface, which is beneficial for increasing the buffer stroke and reducing the instantaneous transmission of impact loads.

[0033] Meanwhile, the support 400 is disposed inside the buffer 300, allowing the support 400 to provide support from within the buffer 300 without directly contacting the upper surface of the box body 100. The buffer 300 can cover the support 400 and separate the support 400 from the box body 100, allowing the buffer material to absorb small vibrations first, while the support 400 participates in bearing the load when the buffer 300 undergoes large deformation. Thus, it can take into account both the flexible buffering function of the buffer 300 and the structural support function of the support 400. Specifically, the support 400 includes a horizontally placed beam 410 and deformation portions 420 corresponding to each protrusion 310, with the deformation portions 420 located between the beam 410 and the corresponding protrusion 310. When the box cover 200 is subjected to pressure or impact, the reaction force generated by the upper surface of the box body 100 on the protrusion 310 can be sequentially transmitted to the corresponding deformation portions 420 and the beam 410. Since the deformation part 420 has a tendency to deform laterally after being compressed, the deformation part 420 can convert at least part of the vertical pressure on the protrusion 310 into lateral bending or lateral unfolding deformation, thereby obtaining a longer effective deformation stroke when the depth of the buffer groove 201 is limited, and reducing the instantaneous impact force between the protrusion 310 and the upper surface of the box body 100.

[0034] For example, when one of the protrusions 310 is subjected to greater pressure, the protrusion 310 can transfer the load to the beam 410 through the corresponding deformation part 420. The beam 410 then transfers the load laterally to other deformation parts 420 and other areas of the buffer 300, so that the load originally concentrated on a single protrusion 310 is shared by multiple areas. Thus, while retaining the deformation capacity of each protrusion 310 and each deformation part 420, load coupling and dispersion between different buffer positions are achieved, reducing the possibility of excessive compression, skewness or collapse of a single protrusion 310, and reducing the local contact pressure on the upper surface of the box body 100. After the pressure is released, the buffer 300 can use its own elasticity to reset the protrusion 310, and the deformable part 420 can provide internal support for the protrusion 310 and help it maintain its predetermined shape. The beam 410 can constrain the relative positions between the deformable parts 420, thereby improving the reset consistency and support height stability of the multiple protrusions 310. Compared with simply reducing the hardness of the buffer material, this structure can reduce the possibility of the buffer 300 collapsing after long-term pressure; compared with using a rigid plate or increasing the hardness of the buffer material as a whole, the structure in which the deformable part 420 deforms laterally can retain a larger buffer stroke. Therefore, by cooperating with the buffer groove 201, the buffer member 300 with spaced protrusions 310, and the built-in support 400 with beam 410 and multiple deformation parts 420, this application can combine the compression energy absorption of the buffer material, the lateral deformation of the deformation parts 420, and the lateral load transfer of the beam 410. Within the limited space of the box cover 200, it can take into account flexible buffering, stable support, and load distribution, improve the problem that it is difficult to balance buffer stroke and support strength in conventional buffer structures, and reduce the possibility of collapse of the protrusions 310 and excessive local stress on the upper surface of the box body 100.

[0035] Furthermore, such as Figure 5 and Figure 6 As shown, in this embodiment, the deformable portion 420 includes an annular portion 421. A notch 422 is formed on the annular portion 421 facing the protrusion 310. The two ends of the annular portion 421 at the notch 422 have a tendency to move away from each other after being compressed. The annular portion 421 facing the beam 410 is connected to the beam 410 via a connecting portion 430. Between two adjacent deformable portions 420, the two ends of the two deformable portions 420 that are close to each other are connected. The annular portion 421 refers to a curved member extending around a deformation space. Its overall outline can be circular, elliptical, or a polygon with rounded corners. The notch 422 formed on the annular portion 421 facing the protrusion 310 gives the annular portion 421 in this embodiment an approximately C-shaped structure with an opening.

[0036] Thus, the portion of the annular portion 421 located on both sides of the notch 422 forms two ends, each end at least partially corresponding to the protrusion 310. When the protrusion 310 is subjected to pressure along the closing direction of the cover 200, the cushioning material of the protrusion 310 transmits the pressure to the two ends of the annular portion 421, causing the two ends to tend to move away from each other laterally, and causing the annular portion 421 to expand and bend. Therefore, the annular portion 421 can absorb some of the impact energy through the relative movement of the two ends, and reduce the possibility of permanent deformation of the protrusion 310 due to axial compression only. The position of the annular portion 421 facing the beam 410 is connected to the beam 410 via a connecting portion 430. Furthermore, the connecting portion 430 can be a connecting neck, connecting rib, or connecting piece extending from the beam 410 towards the protrusion 310; it can be integrally formed with the beam 410 and the annular portion 421, or it can be connected to the beam 410 and the annular portion 421 respectively by welding, bonding, snap-fitting, or fastening. The connecting part 430 can form a load transfer path between the annular part 421 and the beam 410, and can alleviate the stress concentration at the connection position between the annular part 421 and the beam 410 through its own bending deformation.

[0037] Furthermore, between two adjacent deformable portions 420, a first connecting arm 441 is connected to the end of one deformable portion 420 near the end of the other deformable portion 420, and a second connecting arm 442 is connected to the end of the other deformable portion 420 near the end of one deformable portion 420. The ends of the first connecting arm 441 and the second connecting arm 442 are connected, and both the first connecting arm 441 and the second connecting arm 442 are inclined toward the beam 410 in a direction away from their respective deformable portions 420. That is, the first connecting arm 441 and the second connecting arm 442 extend in a direction away from their respective deformable portions 420 and are inclined toward the beam 410, and the ends of the first connecting arm 441 and the second connecting arm 442 are connected, thereby forming a continuous elastic connection structure between the two adjacent deformable portions 420.

[0038] Furthermore, the first connecting arm 441 and the second connecting arm 442 are integrally formed by an arc transition portion 443, the included angle of which narrows after the deformation portion 420 is compressed. The arc transition portion 443 refers to the part that connects the first connecting arm 441 and the second connecting arm 442 and transitions with an arc-shaped profile. It is not limited to a standard arc with a constant radius, but can also be an arc structure with continuously changing curvature. The arc transition portion 443 can reduce the stress concentration caused by the sharp angle formed directly between the first connecting arm 441 and the second connecting arm 442, and provide a region for repeated bending of the two connecting arms.

[0039] For example, when a deformable portion 420 is subjected to pressure and expands laterally, the first connecting arm 441 or the second connecting arm 442 connected to the deformable portion 420 bends accordingly, narrowing the included angle formed at the arc transition portion 443. Since the first connecting arm 441, the arc transition portion 443, and the second connecting arm 442 are connected between two adjacent deformable portions 420, the displacement and load generated by the local deformable portion 420 can be transmitted to the adjacent deformable portions 420 through the connecting structure, so that adjacent areas jointly participate in deformation and load bearing, reducing the possibility of excessive pressure on a single protrusion 310 and the corresponding deformable portion 420.

[0040] Furthermore, the buffer 300 forms a recess 320 between two spaced protrusions 310, and an arc-shaped transition portion 443 is located between the recess 320 and the beam 410. The recess 320 refers to the area of ​​the buffer 300 recessed away from the housing body 100 on the side facing the housing body 100, and it can be arc-shaped, arched, or groove-shaped. The recess 320, on the one hand, constitutes a deformation space between adjacent protrusions 310, and on the other hand, can avoid protruding devices on the upper surface of the housing body 100. Figure 5 As shown, the protrusions 310 and the recesses 320 are alternately arranged. A deformation portion 420 is provided above the protrusions 310, and an arc transition portion 443 is provided above the recesses 320.

[0041] Through the above configuration, the recess 320 provides deformation space for the arc transition portion 443 and the buffer material on its outer side. When at least one of the adjacent protrusions 310 is subjected to pressure, the corresponding deformation portion 420 expands laterally and drives the arc transition portion 443 to bend through the first connecting arm 441 or the second connecting arm 442, thus narrowing the included angle formed at the arc transition portion 443. Therefore, on the one hand, local loads can be transferred to the adjacent deformation portions 420 and the beam 410 through the arc transition portion 443, allowing adjacent areas to participate in deformation and load bearing; on the other hand, the narrowing of the arc transition portion 443 can cause the buffer material around the recess 320 to tend to converge towards the center of the recess 320, thereby improving the buffering performance within a limited space.

[0042] Furthermore, at least one switch is a rotary switch 500, and the rotary switch 500 corresponds to at least one recess 320 so that when the lid 200 is closed, the rotary switch 500 is covered by the corresponding recess 320, and the rotary switch 500 and the corresponding recess 320 are in clearance fit. It is understood that the rotary switch 500 needs to protrude from the upper surface of the box body 100 to facilitate operation by the operator; therefore, when the lid 200 is closed on the box body 100, the recess 320 covers the rotary switch 500 and is in clearance fit with the rotary switch 500, which can prevent the buffer 300 from accidentally activating the rotary switch 500. Furthermore, if the protrusion 310 is subjected to pressure along the closing direction of the lid 200, especially when the pressure acts near the rotary switch 500, the deformation portion 420 corresponding to the protrusion 310 is subjected to pressure and expands laterally, causing the first connecting arm 441 or the second connecting arm connected to the deformation portion 420 to... 442 then bends, and the included angle formed at the arc transition portion 443 narrows. This means that there is a recessed portion 320 covering the knob switch 500, and the included angle at its corresponding arc transition portion 443 narrows. This causes the recessed portion 320 to also move laterally towards the center of the recessed portion 320. As a result, the arc transition portion 443 acts on the recessed portion 320, so that the recessed portion 320 is at least partially in close contact with the knob switch 500. This is equivalent to the arc transition portion 443 driving the recessed portion 320 to be in a contracted setting to clamp the knob switch 500, thereby preventing the knob switch 500 from being accidentally activated under external pressure and improving the overall stability.

[0043] Based on the above embodiment, the protrusions 310 are formed on the buffer member 300 in multiple rows, with each row of protrusions 310 being formed at equal intervals on the buffer member 300; and between adjacent rows of protrusions 310, any two protrusions 310 do not overlap in the column direction. Figure 3 As shown, the protrusions 310 can be formed in multiple rows on the surface of the buffer 300 facing the housing body 100, and each row of protrusions 310 can be equally spaced. In this embodiment, the row direction and column direction are two intersecting directions established based on the plane where the buffer 300 is located. The row direction can be the direction in which the same row of protrusions 310 are arranged sequentially, and the column direction is the direction that spans adjacent rows. The protrusions 310 in adjacent rows are staggered, so that any two protrusions 310 in adjacent rows do not overlap in the column direction. This results in multiple protrusions 310 forming an interlaced arrangement on the surface of the buffer 300, reducing the possibility of concentrated load transmission along the same straight line and making the distribution of buffer contact positions more uniform.

[0044] Furthermore, the protrusion 310 is frustum-shaped. The first end of the protrusion 310 is formed on the surface of the buffer 300, and the second end of the protrusion 310 is configured to abut against the upper surface when the lid 200 is closed. The cross-sectional dimension of the second end is smaller than that of the first end. The larger first end of the protrusion 310 is formed on the surface of the buffer 300, and the smaller second end of the protrusion 310 is configured to abut against the upper surface when the lid 200 is closed. The frustum shape can be understood as a frustum-shaped structure with two end faces of different diameters connected by an inclined circumferential surface. The larger first end of the protrusion 310 is formed on the main surface of the buffer 300, and the smaller second end is used to abut against the upper surface of the box body 100. The larger end of the protrusion 310 can improve the connection strength between the root of the protrusion 310 and the main body of the buffer 300, while the smaller end can provide relatively concentrated flexible contact in the initial stage of compression. As the protrusion 310 is gradually compressed, its cross-section participating in the load-bearing gradually increases, which is beneficial to increase the supporting effect of the protrusion 310 with the degree of compression. It should be noted that the protrusion 310 can also be cylindrical, frustum-shaped, elliptical frustum-shaped, or block-shaped with rounded corners.

[0045] Furthermore, the position where the beam body 410 is connected or installed with the deformable part 420 is called the connection position 411. A beam groove 412 is formed between two adjacent connection positions 411 on the beam body 410. The beam groove 412 penetrates the beam body 410 and extends between the two adjacent connection positions 411. Multiple connection positions 411 are distributed at intervals along the extension direction of the beam body 410. The beam groove 412 can be a long, narrow groove, an oblong hole, or a waist-shaped hole, and its extension direction is preferably consistent with the extension direction of the beam body 410.

[0046] On the one hand, the beam groove 412 reduces the local material of the beam 410 between adjacent connection positions 411, so that the beam 410 can cooperate with the deformation part 420 to produce an appropriate amount of bending, avoiding excessive stiffness of the beam 410 and limiting the lateral deformation of the deformation part 420; on the other hand, when the buffer 300 is rubber-molded on the outside of the bracket 400, the material forming the buffer 300 can enter and penetrate the beam groove 412, so that the buffer materials on both sides of the beam 410 are connected through the beam groove 412, thereby forming a mechanical interlock between the buffer 300 and the bracket 400, reducing the possibility of the bracket 400 slipping or delaminating relative to the buffer 300.

[0047] During use, when the lid 200 is closed on the body 100, multiple protrusions 310 abut against the upper surface of the body 100, while the recesses 320 provide clearance for protruding components such as the rotary switch 500. When the portable power supply is subjected to minor vibrations or external impacts, the protrusions 310 and the surrounding cushioning material undergo elastic compression, and the bracket 400 deforms along with the cushioning 300, maintaining the relative positions of the multiple protrusions 310. When a local protrusion 310 is subjected to greater pressure, the corresponding annular portion 421 expands laterally and transfers the load to other areas through the connecting portion 430, the beam 410, and the connection structure between adjacent deformable portions 420, allowing multiple areas to share the load.

[0048] When the external force applied to the lid 200 or the body 100 is released, the buffer 300 recovers its original shape using its own elasticity. The annular portion 421, the connecting portion 430, the first connecting arm 441, the second connecting arm 442, and the arc transition portion 443 also release their elastic deformation and assist the protrusion 310 in resetting. The beam 410 can constrain the relative positions of the multiple deformable portions 420, so that each protrusion 310 maintains a relatively consistent support height after repeated compression, thereby reducing the possibility of local protrusions 310 becoming skewed or collapsing.

[0049] Example 2: Please see Figure 8 The main difference between this embodiment and Embodiment 1 is that the deformable part 420 includes a flexible ring 450. The flexible ring 450 can be a closed circular ring, an elliptical ring, or a polygonal ring with rounded corners. The flexible ring 450 can be made of elastic plastic, rubber, or elastic metal material. Multiple flexible rings 450 are connected sequentially along the extension direction of the beam 410, and the outer ring walls of two adjacent flexible rings 450 are integrally formed. The beam 410 abuts against the upper part of the multiple flexible rings 450. In this embodiment, "abuts against the upper part" means that the beam 410 contacts the side of the flexible ring 450 facing the box cover 200 and can transmit pressure to the flexible ring 450. This can be direct contact or contact through part of the material of the buffer member 300.

[0050] When the flexible ring 450 is subjected to pressure along the closing direction of the cover 200, its dimension along the pressure direction decreases and it expands laterally, thereby converting the vertical pressure into bending deformation of the ring wall. Since the outer ring walls of adjacent flexible rings 450 are integrally formed, deformation of one flexible ring 450 can affect adjacent flexible rings 450, allowing the load to be transmitted along multiple flexible rings 450; the beam 410 can then provide common constraint and support to the multiple flexible rings 450 from above. The ring wall thickness, ring diameter, and material hardness of the flexible ring 450 can be selected according to the required compression stroke and support capacity of the buffer 300.

[0051] Example 3: In another alternative embodiment, the deformable part 420 may include airbags, with multiple airbags spaced apart sequentially along the extension direction of the beam 410, the beam 410 abutting against the upper part of the airbags. An airbag is a component consisting of a flexible bladder wall forming a compressible chamber; its shape can be annular, cylindrical, elliptical, or flat bladder, and it can be made of rubber, silicone, or thermoplastic polyurethane material. The chamber of the airbag can be filled with air or other compressible gases.

[0052] When the airbag is under pressure, the airbag wall bends and the gas inside the chamber is compressed, causing the airbag to contract in the direction of pressure and expand laterally, thus creating a longer buffer stroke. The beam 410 abuts against the top of multiple airbags, providing common support for them and transferring local loads to the areas where other airbags are located. The airbags are spaced apart, allowing for adequate clearance when they expand laterally, while also reducing the impact of a single airbag rupture on other airbags.

[0053] It should be noted that the annular portion 421 with a notch 422 in Embodiment 1, the flexible ring 450 in Embodiment 2, and the airbag in Embodiment 3 are all used to form a deformable support structure between the beam 410 and the protrusion 310. In practical applications, one of them can be selected according to the buffer stroke, support stiffness, manufacturing process, and usage environment. Different forms of deformable portions 420 can also be combined in different areas. Regardless of the form adopted, the deformable portion 420 is preferably arranged corresponding to the protrusion 310 and can generate lateral deformation under pressure, so as to balance the deformability and support stability of the buffer 300 within a limited thickness.

[0054] Example 4: This embodiment provides an assembly method for a portable power supply device, used to assemble the portable power supply device in any of the above embodiments. During assembly, a bracket 400 is first provided. The bracket 400 can be formed by stamping and bending an elastic metal sheet, injection molding an elastic plastic, or molding a composite material, and beams 410, deformable portions 420, connecting portions 430, connecting positions 411, and beam grooves 412 are formed on the bracket 400. In embodiments where multiple brackets 400 correspond to multiple rows of protrusions 310, positioning fixtures can be used to maintain the spacing and arrangement direction between the multiple brackets 400.

[0055] Subsequently, a buffer component 300 is formed by overmolding the support 400. Specifically, the support 400 can be placed in the molding die of the buffer component 300, and the position of the support 400 is maintained by the positioning pins, positioning grooves, or clamping parts in the die. Then, the elastic material forming the buffer component 300 is injected, pressed, or poured into the die, so that the elastic material covers the beam 410 and the deformable part 420, and enters the space enclosed by the beam groove 412 and the annular part 421. The overmolding can be performed using insert injection molding, compression molding vulcanization, or casting curing processes, and multiple protrusions 310 and recesses 320 can be formed in the same molding process.

[0056] After the buffer component 300 has cured or cooled, it is removed from the mold and embedded into the buffer groove 201 of the lid 200, with the protrusion 310 facing the body 100 and the recesses 320 corresponding to devices that need to be avoided, such as the rotary switch 500. The buffer component 300 can be interference-fitted with the buffer groove 201 through its outer periphery, or it can be fixed to the lid 200 by adhesive, snaps, or fasteners to reduce the possibility of the buffer component 300 coming out of the buffer groove 201 during the opening and closing of the lid 200.

[0057] Finally, the lid 200 is assembled onto the box body 100, allowing the lid 200 to switch between an open and closed state. After the lid 200 is closed, it can be checked whether each protrusion 310 forms a predetermined abutment with the upper surface of the box body 100, and whether protruding devices such as the rotary switch 500 maintain a gap with the corresponding recess 320. By first coating the bracket 400 with adhesive to form the buffer 300, and then embedding the buffer 300 as a whole into the buffer groove 201, the correspondence between the deformable part 420 and the protrusion 310 can be determined during the molding process, and the positioning error caused by separately installing the bracket 400 and the buffer 300 can be reduced, thereby simplifying the assembly process and improving the consistency of the buffer structure.

[0058] As can be seen from the above embodiments, the buffer 300 forms multiple flexible contact positions through multiple spaced protrusions 310, and the bracket 400 forms a laterally deformable support skeleton inside the buffer 300 through the beam 410 and the deformable part 420. The connection structure between adjacent deformable parts 420 can transfer local loads to adjacent areas, and the beam groove 412 and the rubber-coated structure ensure that the buffer 300 and the bracket 400 are reliably connected. Therefore, this embodiment can balance buffer stroke, support capacity and load distribution under the condition of limited internal space of the cover 200, and avoids devices such as the rotary switch 500 through the recessed part 320.

[0059] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

[0060] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0061] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A portable power supply device, characterized in that, include: The box body (100) has an interface and a switch on its upper surface; The lid (200) is closable and mounted on the body of the box (100). A buffer groove (201) is provided on one side facing the body of the box (100). The buffer groove (201) is configured to cover the upper surface when the lid (200) is closed. A buffer element (300) is provided in the buffer groove (201), and a plurality of spaced protrusions (310) are provided on one side facing the box body (100). The protrusions (310) are configured to abut against the upper surface when the box cover (200) is closed. A support (400) is disposed in the buffer (300) and includes a horizontally placed beam (410) and a deformation part (420) corresponding to each of the protrusions (310). The deformation part (420) is disposed between the beam (410) and the protrusion (310), and the deformation part (420) has a tendency to deform laterally after being compressed. The position where the beam body (410) is connected or installed with the deformable part (420) is the connection position (411). The beam body (410) has a beam groove (412) between two adjacent connection positions (411). The beam groove (412) passes through the beam body (410) and extends between two adjacent connection positions (411).

2. A portable power supply device according to claim 1, characterized in that, The deformable part (420) includes an annular part (421), and the annular part (421) has a notch (422) formed at the position facing the protrusion (310). The two ends of the annular part (421) at the notch (422) have a tendency to move away from each other after being pressed. The position of the annular part (421) facing the beam (410) is connected to the beam (410) through a connecting part (430). Between two adjacent deformable portions (420), the two ends of the two deformable portions (420) that are close to each other are connected.

3. A portable power supply device according to claim 2, characterized in that, Between two adjacent deformable parts (420), a first connecting arm (441) is connected to the end of one deformable part (420) near the end of the other deformable part (420), and a second connecting arm (442) is connected to the end of the other deformable part (420) near the end of one deformable part (420). The end of the first connecting arm (441) is connected to the end of the second connecting arm (442), and both the first connecting arm (441) and the second connecting arm (442) are inclined toward the beam (410) in a direction away from the deformed part (420).

4. A portable power supply device according to claim 3, characterized in that, The first connecting arm (441) and the second connecting arm (442) are integrally formed through an arc transition portion (443), and the included angle of the arc transition portion (443) narrows after the deformation portion (420) is pressed.

5. A portable power supply device according to claim 4, characterized in that, The buffer (300) forms a recess (320) between two spaced protrusions (310), and the arc transition (443) is located between the recess (320) and the beam (410).

6. A portable power supply device according to claim 5, characterized in that, At least one switch is a rotary switch (500), the rotary switch (500) corresponds to at least one of the recesses (320) so that when the lid (200) is closed, the rotary switch (500) is covered by the corresponding recess (320), and the rotary switch (500) and the corresponding recess (320) are in clearance fit.

7. A portable power supply device according to claim 1, characterized in that, The deformable part (420) includes a flexible ring (450), and a plurality of the flexible rings (450) are arranged in sequence; between two adjacent flexible rings (450), the outer ring walls of the two flexible rings (450) are integrally formed; the beam (410) abuts against the top of the flexible ring (450).

8. A portable power supply device according to claim 1, characterized in that, The deformable part (420) includes an airbag body, and a plurality of the airbag bodies are arranged sequentially at intervals, with the beam body (410) abutting above the airbag body.

9. A portable power supply device according to claim 1, characterized in that, The protrusions (310) are arranged in multiple rows on the buffer (300), with each row of protrusions (310) being formed at equal intervals on the buffer (300); and between adjacent rows of protrusions (310), any two protrusions (310) do not overlap in the column direction.

10. A portable power supply device according to claim 9, characterized in that, The protrusion (310) is frustum-shaped, with the larger end of the protrusion (310) formed on the surface of the buffer (300), and the smaller end of the protrusion (310) is configured to abut against the upper surface when the lid (200) is closed.

11. A portable power supply device according to claim 1, characterized in that, The buffer (300) is formed on the outside of the bracket (400) by overmolding.

12. A method for assembling a portable power supply device, characterized in that, For assembling a mobile power supply device as described in any one of claims 1-11, comprising: Provide a support frame, and wrap the support frame with a molded rubber cushioning component; The cushioning element is embedded in the cushioning groove of the box cover; Assemble the lid onto the main body to obtain a portable power supply device.

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