High-strength waterproof key structure of code scanning PDA

Abstract

The utility model provides a high-strength waterproof key structure of a code scanning PDA, which comprises a shell, a silica gel assembly and a hard pressing piece, a switch is arranged in the shell, and a mounting hole is arranged on the side wall of the shell at a position corresponding to the switch; the silica gel assembly is hermetically connected with the shell; the hard pressing piece is movably connected with the mounting hole, and one end of the hard pressing piece is connected with the silica gel assembly. According to the high-strength waterproof key structure of the code scanning PDA, the silica gel assembly is in sealed connection with the shell, and the hard pressing piece presses the silica gel assembly, so that the switch is triggered. Due to the composite design of the silica gel sheet, the plastic sheet and the steel sheet, the stability of the key structure is enhanced, and the silica gel sheet plays a role of pressing the switch; the plastic sheet prevents the silica gel assembly from being deformed or punctured due to high-time pressing of the hard pressing piece; the steel sheet extrudes the silica gel sheet to be in sealed connection with the mounting hole, and the supporting silica gel sheet is not prone to deformation.

Description

Technical Field

[0001] The utility model relates to the field of key structures, in particular to a high-strength waterproof key structure for a code-scanning PDA. Background Art

[0002] As an intelligent device for data collection, processing and transmission, handheld barcode scanning PDA terminals play an important role in the construction of logistics informationization. Barcode scanning PDA terminals are suitable for logistics, e-commerce picking and other applications. The machine is required to work normally and continuously on rainy days. The life of the barcode scanning button clicks must meet more than 200W times, and the button feel and the waterproof performance of the whole machine must be guaranteed.

[0003] The existing PDA key structure only uses a single silicone as the medium structure between the key and the trigger switch. This type of key silicone needs to be dispensed on the shell material to form a waterproof structure, which has high production costs and poor reliability. At the same time, due to the high intensity of the key, the silicone is prone to deformation, cracking, and even being pierced by the key. Rainwater will enter the PDA through the broken silicone, causing damage to the machine.

[0004] Therefore, it is necessary to provide a high-strength waterproof key structure for a code scanning PDA to solve the above technical problems. Utility Model Content

[0005] The utility model provides a high-strength waterproof key structure for a code scanning PDA, so as to solve the problems in the prior art that the code scanning PDA forms waterproofness by dispensing glue between the key silicone and the shell, which is costly, has a single key silicone structure, is prone to deformation or even cracking when high-strength silicone is used, and the key structure cannot seal and waterproof the PDA.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a high-strength waterproof key structure for a code scanning PDA, which includes:

[0007] A housing, wherein a switch is disposed inside the housing, and a mounting hole is disposed on a side wall of the housing at a position corresponding to the switch;

[0008] A silicone component is disposed in the mounting hole, the silicone component is sealed and connected to the housing, and the silicone component is used to press the switch; and

[0009] A hard pressing piece, movably connected to the mounting hole, one end of the hard pressing piece is connected to the silicone component, and the other end extends out of the mounting hole, and the hard pressing piece is used to press the silicone component to trigger the switch;

[0010] Wherein, the silicone component comprises:

[0011] A silicone sheet, one end of which is sealed and connected to the hole wall of the mounting hole, and the center of one side of the silicone sheet is connected to the hard pressing piece;

[0012] A plastic sheet connected to the other side of the silicone sheet, wherein the plastic sheet is movably connected to the switch; and

[0013] The steel sheet is an annular structure, and the steel sheet is arranged on the inner side of the silicone sheet, and the steel sheet is sleeved on the outer ring of the hardware pressing member, and the steel sheet is used to squeeze the silicone sheet and seal it with the mounting hole.

[0014] In the utility model, the plastic sheet, the silicone sheet and the steel sheet are an integrated oil pressure-molded structure.

[0015] In the utility model, the mounting hole comprises:

[0016] A first end portion, located at one end of the mounting hole, the first end portion corresponding to the position of the switch; and

[0017] A second end portion is located at the other end of the mounting hole, the second end portion is movably connected to the rigid pressing member, the cross-sectional diameter of the second end portion is larger than the cross-sectional diameter of the first end portion, and a connecting surface is provided on a side of the second end portion close to the first end portion;

[0018] The silicone sheet comprises:

[0019] A fixing part, located at one end of the silicone sheet, one side of the fixing part is connected to the connecting surface, and the other side of the fixing part is connected to one end of the steel sheet;

[0020] A deformation part, located at the other end of the silicone sheet, wherein the center of one side of the deformation part is connected to the hard pressing member, and the other side of the deformation part is connected to the plastic sheet; and

[0021] The extension part is located in the middle of the silicone sheet, the extension part is plugged into the first end, the two ends of the extension part are respectively connected to the fixing part and the deformation part, and the inner circle of the extension part is connected to the outer wall of the other end of the steel sheet.

[0022] In the utility model, the steel sheet comprises:

[0023] A first supporting portion, located at one end of the steel sheet, the first supporting portion being connected to the other side of the fixing portion; and

[0024] The second supporting portion is located at the other end of the steel sheet, one end of the second supporting portion is connected to the inner side of the first supporting portion, and the second supporting portion is connected to the inner side of the extending portion.

[0025] In the utility model, a sealing convex ring is arranged on the outer side of the extension portion, and the sealing convex ring is connected to the side wall of the first end portion.

[0026] In the utility model, a first mounting groove is arranged on one side of the deformation portion, and one end of the rigid pressing member is connected to the first mounting groove.

[0027] In the utility model, a second installation groove is arranged on the other side of the silicone sheet, and the plastic sheet is embedded in the second installation groove.

[0028] In the utility model, a third installation groove is arranged on one side of the silicone sheet, and the steel sheet is embedded in the third installation groove.

[0029] In the present invention, the mounting hole further comprises a guide portion, the guide portion is located between the first end portion and the second end portion, and the cross-sectional diameter of the guide hole at one end close to the connecting surface gradually increases.

[0030] In the present utility model, the rigid pressing member comprises:

[0031] A pressing portion, located at one end of the rigid pressing member, the pressing portion being movably connected to the second end portion; and

[0032] The plug-in portion is connected to one side of the pressing portion, the plug-in portion extends to the first end portion and is connected to one side of the silicone sheet, and the cross-sectional width of the pressing portion is greater than the cross-sectional width of the plug-in portion.

[0033] Compared with the prior art, the utility model has the following beneficial effects: the high-strength waterproof key structure of the code scanning PDA of the utility model is sealed and connected to the shell through the silicone component, and the hard pressing piece allows the user to press the silicone component to trigger the switch. The composite design of the silicone sheet, plastic sheet and steel sheet enhances the stability of the key structure. The silicone sheet has good elasticity and resilience, and plays the role of a press switch; a plastic sheet is set on one side of the silicone sheet to prevent the silicone component from being deformed or punctured by a high number of presses of the hard pressing piece; the steel sheet is used to squeeze the silicone sheet and seal it with the mounting hole, and the steel sheet supports the silicone sheet so that it is not easily deformed, so that the connection between the silicone component and the shell is more stable, and the silicone component has high durability.

[0034] The silicone component of the utility model can be directly installed through the outside of the shell, without the need for glue dispensing and sealing, thereby reducing production costs and facilitating users to replace damaged silicone components. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the utility model.

[0036] Figure 1 The figure is a schematic diagram of the overall structure of a PDA machine according to a preferred embodiment of the present utility model.

[0037] Figure 2 The key structure cross section of the preferred embodiment of the utility model Figure 1 .

[0038] Figure 3 The key structure cross section of the preferred embodiment of the utility model Figure 2 .

[0039] Figure 4 This is a stereoscopic diagram of a silicone component according to a preferred embodiment of the present utility model.

[0040] Figure 5 This is a cross-sectional view of a silicone component according to a preferred embodiment of the present utility model.

[0041] Figure numerals: 11, shell; 111, mounting hole; 1111, first end; 1112, guide portion; 1113, second end; 112, connecting surface; 12, silicone sheet; 121, fixing portion; 122, extension portion; 1221, sealing convex ring; 123, deformation portion; 1231, first mounting groove; 1232, second mounting groove; 124, third mounting groove; 13, plastic sheet; 14, steel sheet; 141, first supporting portion; 142, second supporting portion; 15, hard pressing piece; 151, plug-in portion; 152, pressing portion; 16, switch. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0043] In the figures, structurally similar elements are denoted by the same reference numerals.

[0044] The words "first", "second" and the like in the terminology of the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, and should not be construed as limiting the order of precedence.

[0045] Please refer to Figure 1 , Figure 2 and Figure 3 ,in Figure 1 The figure is a schematic diagram of the overall structure of a PDA machine according to a preferred embodiment of the present utility model. Figure 2 The key structure cross section of the preferred embodiment of the utility model Figure 1 . Figure 3 The key structure cross section of the preferred embodiment of the utility model Figure 2 .

[0046] The following is a preferred embodiment of a high-strength waterproof key structure for a code scanning PDA provided by the utility model that can solve the above technical problems.

[0047] The high-strength waterproof button structure of the code scanning PDA includes a shell 11, a silicone component and a hard pressing piece 15. A switch 16 is arranged inside the shell 11, and a mounting hole 111 is arranged on the side wall of the shell 11 at a position corresponding to the switch 16; the silicone component is arranged in the mounting hole 111, the silicone component is sealed and connected to the shell 11, and the silicone component is used to press the switch 16; the hard pressing piece 15 is movably connected to the mounting hole 111, one end of the hard pressing piece 15 is connected to the silicone component, and the other end extends out of the mounting hole 111, and the hard pressing piece 15 is used to press the silicone component, thereby triggering the switch 16.

[0048] The silicone assembly includes a silicone sheet 12, a plastic sheet 13 and a steel sheet 14; one end of the silicone sheet 12 is sealed and connected to the hole wall of the mounting hole 111, and the center of one side of the silicone sheet 12 is connected to the hard pressing piece 15; the plastic sheet 13 is connected to the other side of the silicone sheet 12, and the plastic sheet 13 is movably connected to the switch 16; the steel sheet 14 is an annular structure, the steel sheet 14 is arranged on the outside of the silicone sheet 12, and the steel sheet 14 is sleeved on the outer ring of the hardware pressing piece.

[0049] The silicone component in this embodiment is sealed and connected to the housing 11, and the hard pressing piece 15 allows the user to easily press the silicone component to trigger the switch 16. The composite design of the silicone sheet 12, the plastic sheet 13 and the steel sheet 14 enhances the stability of the key structure. The silicone sheet 12 has good elasticity and resilience, and plays the role of pressing the switch 16; a plastic sheet 13 is arranged on one side of the silicone sheet 12, and the plastic sheet 13 prevents the silicone component from being deformed or punctured by a high number of presses by the hard pressing piece 15; the steel sheet 14 is used to squeeze the silicone sheet 12 and seal it with the mounting hole 111. The steel sheet 14 supports the silicone sheet 12 and is not easily deformed, so that the connection between the silicone component and the housing is more stable, and the silicone component has high durability. The silicone component in this embodiment can be directly installed through the outside of the housing, without the need for glue sealing, which is convenient for users to replace damaged silicone components.

[0050] The high-strength waterproof key structure of the code scanning PDA in this embodiment is described in detail:

[0051] Combination Figure 4 The plastic sheet 13, the silicone sheet 12 and the steel sheet 14 are an integrated hydraulically formed structure. The integrated silicone component structure improves the stability of the silicone component structure and makes the silicone component more durable; the integrated hydraulic molding of the silicone component reduces the steps of separate manufacturing and assembly of multiple components, reduces production costs, and facilitates assembly.

[0052] Combination Figure 2 and Figure 3 In this embodiment, the mounting hole 111 includes a first end 1111 and a second end 1113. The first end 1111 is located at one end of the mounting hole 111, and the first end 1111 corresponds to the position of the switch 16; the second end 1113 is located at the other end of the mounting hole 111, and the second end 1113 is movably connected to the hard pressing member 15. The cross-sectional diameter of the second end 1113 is greater than the cross-sectional diameter of the first end 1111, and a connecting surface 112 is provided on the side of the second end 1113 close to the first end 1111.

[0053] Combination Figure 4 The silicone sheet 12 includes a fixed portion 121, a deformable portion 123 and an extended portion 122; wherein the fixed portion 121 is located at one end of the silicone sheet 12, one side of the fixed portion 121 is connected to the connecting surface 112, and the other side of the fixed portion 121 is connected to one end of the steel sheet 14; the fixed portion 121 is connected to the connecting surface 112, which improves the sealing of the connection between the silicone component and the housing 11. The deformable portion 123 is located at the other end of the silicone sheet 12, the center of one side of the deformable portion 123 is connected to the hard pressing member 15, and the other side of the deformable portion 123 is connected to the plastic sheet 13; the extended portion 122 is located in the middle of the silicone sheet 12, the extended portion 122 is plugged into the first end 1111, the two ends of the extended portion 122 are respectively connected to the fixed portion 121 and the deformable portion 123, and the inner circle of the extended portion 122 is connected to the outer wall of the other end of the steel sheet 14.

[0054] A sealing convex ring 1221 is provided on the outer side of the extension portion 122, and the sealing convex ring 1221 is connected to the side wall of the first end portion 1111, thereby improving the sealing performance of the connection between the silicone sheet 12 and the housing 11. The steel sheet 14 in this embodiment is connected to the inner side of the extension portion 122, and the steel sheet 14 ensures that the silicone sheet 12 is squeezed and sealed with the housing 11 through the sealing convex ring 1221, so that the silicone assembly is sealed and connected to the housing 11.

[0055] Furthermore, a first mounting groove 1231 is provided on one side of the deformation portion 123 , and one end of the rigid pressing member 15 is connected to the first mounting groove 1231 , thereby increasing the contact surface between the silicone sheet 12 and the rigid pressing member 15 and improving the stability of the structural connection.

[0056] A second mounting groove 1232 is provided on the other side of the silicone sheet 12 , and the plastic sheet 13 is embedded in the second mounting groove 1232 .

[0057] In this embodiment, the second mounting groove 1232 is located on the other side of the deformation portion 123 of the silicone sheet 12, and the plastic sheet 13 is embedded in the second mounting groove 1232, which increases the contact surface between the plastic sheet 13 and the silicone sheet 12, and the structure of the silicone assembly is more compact and stable.

[0058] Combination Figure 3 and Figure 5In this embodiment, a third mounting groove 124 is provided on one side of the silicone sheet 12 , and the steel sheet 14 is embedded in the third mounting groove 124 , thereby improving the stability of the connection between the silicone sheet 12 and the steel sheet 14 .

[0059] Combination Figure 2 and Figure 3 In this embodiment, the mounting hole 111 also includes a guide portion 1112, which is located between the first end 1111 and the second end 1113. The cross-sectional diameter of the guide hole close to the connecting surface 112 gradually increases, and the guide portion 1112 has a flared structure to facilitate the assembly of the silicone assembly.

[0060] Combination Figure 3 and Figure 5 , the structure of the steel sheet 14 in this embodiment is described:

[0061] In this embodiment, the steel sheet 14 includes a first support portion 141 and a second support portion 142; the first support portion 141 is located at one end of the steel sheet 14, and the first support portion 141 is connected to the other side of the fixed portion 121; the second support portion 142 is located at the other end of the steel sheet 14, one end of the second support portion 142 is connected to the inner circle of the first support portion 141, and the second support portion 142 is connected to the inner side of the extension portion 122.

[0062] The structure of the hard pressing member 15 in this embodiment is described as follows:

[0063] Combination Figure 2 and Figure 3 The hard pressing piece 15 includes a plug-in portion 151 and a pressing portion 152; the pressing portion 152 is located at one end of the hard pressing piece 15, and the pressing portion 152 is movably connected to the second end portion 1113; the plug-in portion 151 is connected to one side of the pressing portion 152, the plug-in portion 151 extends to the first end portion 1111, and one end of the plug-in portion 151 is connected to one side of the silicone sheet 12, and the cross-sectional width of the pressing portion 152 is greater than the cross-sectional width of the plug-in portion 151, which is convenient for pressing.

[0064] The working principle of this utility model:

[0065] 1. Prepare components: prepare the housing 11 , the silicone component (including the silicone sheet 12 , the plastic sheet 13 and the steel sheet 14 ), and the hard pressing piece 15 .

[0066] 2. Install the silicone component and place the silicone component in the installation hole 111 of the housing 11 .

[0067] First, the plastic sheet 13 is aligned with the switch 16 in the housing 11 .

[0068] Next, insert the silicone assembly into the mounting hole 111. The fixing portion 121 of the silicone sheet 12 is tightly fitted with the connecting surface 112 of the mounting hole 111, and the steel sheet 14 is also located inside the silicone sheet 12. At this time, the sealing convex ring 1221 of the silicone sheet 12 should be tightly connected with the side wall of the mounting hole 111 to ensure good sealing.

[0069] The silicone assembly in this embodiment is formed by hydraulic molding of a silicone sheet 12, a plastic sheet 13 and a steel sheet 14. The silicone assembly is directly installed from the outside of the housing 11, and the sealing convex ring 1221 of the extension 122 interferes with the housing 11, thereby achieving a waterproof effect.

[0070] A plastic sheet 13 (ie, a PC sheet) with a thickness of 0.38 mm is embedded in the silicone component during oil pressure forming to prevent the silicone sheet 12 from being deformed or punctured by the hard pressing piece 15 against the silicone sheet 12 .

[0071] A 0.2 mm thick steel sheet 14 is embedded in the silicone component during oil pressure forming. The steel sheet 14 supports the silicone sheet 12 and prevents deformation, thereby ensuring the interference between the sealing convex ring 1221 and the shell 11, so that the silicone sheet 12 and the shell 11 are sealed and connected.

[0072] 3. Install the hard pressing piece 15.

[0073] The plug-in portion 151 of the rigid pressing member 15 is passed through the second end portion 1113 of the mounting hole 111, the plug-in portion 151 of the rigid pressing member 15 is located in the first end portion 1111, and the plug-in portion 151 is connected to the deformable portion 123 of the silicone sheet 12. Ensure that the connection between the rigid pressing member 15 and the silicone sheet 12 is firm and reliable.

[0074] Then, the pressing portion 152 of the rigid pressing member 15 is movably connected to the second end portion 1113 of the mounting hole 111 .

[0075] 4. After installation, check whether all components are installed in place and the connections are firm. Then, debug the buttons to ensure that the buttons can press the switch smoothly 16.

[0076] This completes the assembly process of the high-strength waterproof key structure of the code scanning PDA of the preferred embodiment.

[0077] In addition, the silicone sheet in this embodiment preferably adopts Japan Shin-Etsu organic high-life silicone material, model KE-5141U. The key silicone component designed by the utility model is adjusted from a single silicone material to a composite material structure relative to the conventional design scheme. The 0.38mm anti-puncture and anti-fatigue PC film, Shin-Etsu silicone and 0.2mm steel sheet are integrally hydraulically molded to form a silicone component with a composite material structure. The silicone component can be directly installed from the outside of the shell, without the need for glue sealing, which reduces the production cost and facilitates users to replace damaged silicone components.

[0078] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A high-strength waterproof key structure for a barcode scanning PDA, characterized in that: include: A housing, wherein a switch is disposed inside the housing, and a mounting hole is disposed on a side wall of the housing at a position corresponding to the switch; A silicone component is disposed in the mounting hole, the silicone component is sealed and connected to the housing, and the silicone component is used to press the switch; and A hard pressing piece, movably connected to the mounting hole, one end of the hard pressing piece is connected to the silicone component, and the other end extends out of the mounting hole, and the hard pressing piece is used to press the silicone component to trigger the switch; Wherein, the silicone component comprises: A silicone sheet, one end of which is sealed and connected to the hole wall of the mounting hole, and the center of one side of the silicone sheet is connected to the hard pressing piece; A plastic sheet connected to the other side of the silicone sheet, wherein the plastic sheet is movably connected to the switch; and The steel sheet is an annular structure, and the steel sheet is arranged on the inner side of the silicone sheet, and the steel sheet is sleeved on the outer ring of the hardware pressing member, and the steel sheet is used to squeeze the silicone sheet and seal it with the mounting hole.

2. The high-strength waterproof key structure for a barcode scanning PDA according to claim 1, characterized in that: The plastic sheet, the silicone sheet and the steel sheet are an integrated oil pressure-molded structure.

3. The high-strength waterproof key structure for a code scanning PDA according to claim 1, characterized in that: The mounting hole comprises: A first end portion, located at one end of the mounting hole, the first end portion corresponding to the position of the switch; and A second end portion is located at the other end of the mounting hole, the second end portion is movably connected to the rigid pressing member, the cross-sectional diameter of the second end portion is larger than the cross-sectional diameter of the first end portion, and a connecting surface is provided on a side of the second end portion close to the first end portion; The silicone sheet comprises: A fixing part, located at one end of the silicone sheet, one side of the fixing part is connected to the connecting surface, and the other side of the fixing part is connected to one end of the steel sheet; A deformation part, located at the other end of the silicone sheet, wherein the center of one side of the deformation part is connected to the hard pressing member, and the other side of the deformation part is connected to the plastic sheet; and The extension part is located in the middle of the silicone sheet, the extension part is plugged into the first end, the two ends of the extension part are respectively connected to the fixing part and the deformation part, and the inner circle of the extension part is connected to the outer wall of the other end of the steel sheet.

4. The high-strength waterproof key structure for a code scanning PDA according to claim 3, characterized in that: The steel sheet comprises: A first supporting portion, located at one end of the steel sheet, the first supporting portion being connected to the other side of the fixing portion; and The second supporting portion is located at the other end of the steel sheet, one end of the second supporting portion is connected to the inner side of the first supporting portion, and the second supporting portion is connected to the inner side of the extending portion.

5. The high-strength waterproof key structure for a code scanning PDA according to claim 3, characterized in that: A sealing convex ring is arranged on the outer side of the extension portion, and the sealing convex ring is connected to the side wall of the first end portion.

6. The high-strength waterproof key structure for a barcode scanning PDA according to claim 3, characterized in that: A first mounting groove is provided on one side of the deformation portion, and one end of the hard pressing member is connected to the first mounting groove.

7. The high-strength waterproof key structure for a barcode scanning PDA according to claim 1, characterized in that: A second mounting groove is provided on the other side of the silicone sheet, and the plastic sheet is embedded in the second mounting groove.

8. The high-strength waterproof key structure for a code scanning PDA according to claim 3, characterized in that: A third mounting groove is provided on one side of the silicone sheet, and the steel sheet is embedded in the third mounting groove.

9. The high-strength waterproof key structure for a code scanning PDA according to claim 3, characterized in that: The mounting hole further comprises a guide portion, wherein the guide portion is located between the first end portion and the second end portion, and a cross-sectional diameter of the guide hole at one end close to the connecting surface gradually increases.

10. The high-strength waterproof key structure for a code scanning PDA according to claim 3, characterized in that: The hard pressing member comprises: A pressing portion, located at one end of the rigid pressing member, the pressing portion being movably connected to the second end portion; and The plug-in portion is connected to one side of the pressing portion, the plug-in portion extends to the first end portion and is connected to one side of the silicone sheet, and the cross-sectional width of the pressing portion is greater than the cross-sectional width of the plug-in portion.

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