Deep protection operating lever

Abstract

The utility model relates to the technical field of operating levers, in particular to a deep protection operating lever. The dust-proof device comprises a mounting seat assembly, a swing rod assembly and a dust-proof cover mounted between the swing rod assembly and the mounting seat assembly, the mounting seat assembly comprises a fixed base for mounting the swing rod assembly and a base mounted at the bottom of the fixed base, and a circuit board is mounted at the bottom of the inner side of the base. The circuit board is fixed on the base, the upper surface of the circuit board and a mounting gap between the circuit board and the base are wrapped with a lower protective glue layer, the bottom of the fixed base is provided with an inwards-concave mounting glue injection groove with a downward groove opening, the Hall chip is fixed in a groove cavity of the mounting glue injection groove, and an upper protective glue layer is arranged at a gap between the Hall chip and the groove cavity of the mounting glue injection groove. The Hall chip is connected with the circuit board through a flexible printed circuit (FPC). According to the utility model, even if the dustproof cover is damaged, good waterproof and dustproof effects on the circuit board and the Hall chip can still be maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of joysticks, in particular to a joystick with deep protection. Background Art

[0002] A joystick is a physical device that converts the movement of a plastic rod into electronic information that can be processed by a computer. Commonly used industrial joysticks include Hall joysticks and potentiometer joysticks.

[0003] The joystick is used in workplaces under harsh environmental conditions, such as engineering machinery for aerial work, and has strict requirements for waterproof and dustproof, so a waterproof and dustproof design will be added to the joystick. As recorded in the text of a joystick named CN220137597U, a dust cover is set between the base and the swing rod to prevent water and dust from flowing to the circuit board and the Hall chip through the gap between the base and the swing rod. However, in order to ensure that the installation of the dust cover does not hinder the swing operation of the swing rod, the dust cover is mostly made of flexible rubber material, and in harsh environments, the rubber dust cover may be damaged by heavy objects; damaged by sharp objects; corroded and damaged by splashing corrosive liquids, etc. External rainwater and other liquids will enter the dust cover through the broken mouth of the dust cover. After that, the water will penetrate into the circuit board and the Hall chip through the gap between the ball of the joystick and the base, resulting in functional failure of the joystick. There is a problem that the waterproof and dustproof effect of the joystick is still not ideal under harsh conditions, so it is urgent to solve it. Utility Model Content

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a joystick with deep protection, which can still maintain good waterproof and dustproof effects on the circuit board and the Hall chip even if the dust cover is damaged.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A joystick with deep protection comprises a mounting seat assembly, a rocker arm assembly and a dust cover installed between the rocker arm assembly and the mounting seat assembly, the mounting seat assembly comprises a fixed base for installing the rocker arm assembly and a base installed at the bottom of the fixed base, a circuit board is installed at the inner bottom of the base, and the upper surface of the circuit board and the installation gap with the base are wrapped with a lower protective rubber layer, the bottom of the fixed base is provided with a concave installation glue injection groove with a notch facing downward, a Hall chip is fixed in the groove cavity of the installation glue injection groove, and an upper protective rubber layer is provided at the gap between the Hall chip and the groove cavity of the installation glue injection groove, and the Hall chip is connected to the circuit board through a flexible circuit board (FPC).

[0007] As a further solution of the utility model: the fixed base includes an upper base and a lower base, the upper base is fixed on the joystick installation station, the lower base is detachably installed on the bottom of the upper base, the installation glue injection groove is opened at the bottom of the lower base, the flexible circuit board FPC is loosely arranged between the Hall chip and the circuit board, and when the flexible circuit board FPC is tightened, there is an operating space between the base and the fixed base for disassembling and assembling the lower base.

[0008] As a further solution of the utility model: a flange ring is formed on the outer periphery of the upper base, the bottom of the flange ring protrudes from the bottom of the upper base, and an annular groove is arranged on the inner periphery of the flange ring, and a clamping ring elastically clamped into the annular groove is fixed on the top outer periphery of the base.

[0009] As a further solution of the utility model: the base is made of plastic.

[0010] As a further solution of the utility model: the lower protective rubber layer fills the inner bottom of the base, and the top surface of the lower protective rubber layer is higher than the top surface of the circuit board.

[0011] As a further solution of the utility model: the connection points between the flexible circuit board FPC and the circuit board and the Hall chip are respectively wrapped in the lower protective rubber layer and the upper protective rubber layer.

[0012] As a further solution of the utility model: the upper protective adhesive layer and the lower protective adhesive layer are both organic silicon electronic potting adhesive.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. A circuit board is installed at the bottom of the inner side of the base, and the upper surface of the circuit board and the installation gap with the base are wrapped with a lower protective rubber layer. The circuit board is sealed in the base by the lower protective rubber layer. Even if the dust cover is damaged, the circuit board can still be kept in a good waterproof state. In addition, a concave installation injection groove with a notch facing downward is provided at the bottom of the fixed base. The Hall chip is accommodated in the groove cavity of the installation injection groove, and the Hall chip is sealed in the groove cavity of the installation injection groove by the upper protective rubber layer. Even if the dust cover is damaged, the Hall chip can still be kept in a good waterproof state.

[0015] 2. When the Hall chip and other components need to be repaired and replaced, the upper base can be kept fixed on the operating lever installation station. After the base is disassembled downward, the flexible circuit board FPC is tightened. After that, there is an operating space between the base and the fixed base for disassembling the lower base. Then the lower base and the upper base can be disassembled, so there is no need to disassemble the joystick as a whole, which effectively improves the convenience of repairing and disassembling components such as Hall chips.

[0016] 3. A flange ring is formed on the outer periphery of the upper base, the bottom of the flange ring protrudes from the bottom of the upper base, and a ring groove is provided on the inner periphery of the flange ring. A clamping ring elastically clamped into the ring groove is fixed on the outer periphery of the top of the base. The clamping ring and the ring groove are elastically clamped, which effectively improves the convenience of disassembly and assembly of the base and the fixed base.

[0017] 4. The base is made of plastic material. By utilizing the elasticity of the plastic material itself, the clamping ring and the ring groove can be connected or disassembled by squeezing the outer periphery of the base during disassembly and assembly, making the disassembly and assembly process more convenient; and due to the rigidity of the plastic material itself, the stability of the connection between the base and the upper base is also guaranteed.

[0018] 5. The lower protective rubber layer fills the inner bottom of the base, and the top surface of the lower protective rubber layer is higher than the top surface of the circuit board, so that the lower protective rubber layer can also achieve good support and sealing for the bottom of the circuit board, preventing leakage from the gap between the side wall of the circuit board and the lower protective rubber layer, which affects the waterproof effect of the bottom of the circuit board.

[0019] 6. The connection points between the flexible circuit board FPC and the circuit board and the Hall chip are wrapped in the lower protective rubber layer and the upper protective rubber layer respectively, which effectively prevents water seepage from occurring at the connection points of the flexible circuit board FPC.

[0020] 7. Both the upper protective rubber layer and the lower protective rubber layer are silicone electronic potting glue, which has the characteristics of strong anti-aging ability, good weather resistance and excellent impact resistance, which can effectively ensure the service life of the upper protective rubber layer and the lower protective rubber layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional structural schematic diagram of the utility model.

[0022] Figure 2 It is a schematic cross-sectional structural diagram of the base assembly and the base in the utility model.

[0023] Figure 3 It is a structural schematic diagram of the glue injection groove installed in the base assembly of the utility model.

[0024] Figure 4 It is a structural schematic diagram of the utility model.

[0025] In the figure: 10, base; 11, retaining ring; 20, rocker assembly; 30, circuit board; 40, dust cover; 51, upper base; 512, ring groove; 52, lower base; 521, installation glue injection groove; 60, Hall chip; 70, flexible circuit board FPC; 80, upper protective glue layer; 90, lower protective glue layer. DETAILED DESCRIPTION

[0026] 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 in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] For ease of understanding, the specific structure and working mode of the utility model are further described below in conjunction with the accompanying drawings:

[0028] The specific structure of the utility model refers to Figure 1-4 As shown, its main structure includes a mounting seat assembly, a swing arm assembly 20, and a dust cover 40 installed between the swing arm assembly 20 and the mounting seat assembly. Among them, the mounting seat assembly includes a fixed base for mounting the swing arm assembly 20 and a base 10 installed at the bottom of the fixed base. A circuit board 30 is installed at the inner bottom of the base 10, and the upper surface of the circuit board 30 and the installation gap with the base 10 are wrapped with a lower protective rubber layer 90. The circuit board 30 is sealed in the base 10 by the lower protective rubber layer 90. Even if the dust cover 40 is damaged, the circuit board 30 can still be kept in a good waterproof state. In addition, a concave installation glue injection groove 521 with a groove facing downward is provided at the bottom of the fixed base, and the Hall chip 60 is fixed in the groove cavity of the installation glue injection groove 521, and an upper protective glue layer 80 is provided in the gap between the Hall chip 60 and the groove cavity of the installation glue injection groove 521. The Hall chip 60 and the circuit board 30 are connected through a flexible circuit board FPC70, and the Hall chip 60 is accommodated by the groove cavity of the installation glue injection groove 521, and the Hall chip 60 is sealed in the groove cavity of the installation glue injection groove 521 by the upper protective glue layer 80. Even if the dust cover 40 is damaged, the Hall chip 60 can still be kept in a good waterproof state. Specifically, after the Hall chip 60 is connected to the circuit board 30 through the flexible circuit board FPC70, the arrangement process of the lower protective glue layer 90 is as follows: first arrange the circuit board 30 at the inner bottom of the base 10, and then inject glue into the base 10, fill the installation gap between the circuit board 30 and the base 10 with glue, and make the glue cover the circuit board 30, and after condensation, the glue injected into the base 10 forms the lower protective glue layer 90. The arrangement process of the upper protective glue layer 80 is as follows: invert the fixed base so that the notch of the installation glue injection groove 521 faces upward, and then arrange the Hall chip 60 in the installation glue injection groove 521, and then inject glue into the installation glue injection groove 521, and the glue submerges the Hall chip 60 to form the upper protective glue layer 80.

[0029] On the basis of the above, if Figure 1 and Figure 2As shown, the fixed base includes an upper base 51 and a lower base 52. The upper base 51 is fixed on the joystick installation station, and the lower base 52 is detachably installed at the bottom of the upper base 51. The installation injection groove 521 is opened at the bottom of the lower base 52. The flexible circuit board FPC70 is loosely arranged between the Hall chip 60 and the circuit board 30, and when the flexible circuit board FPC70 is tightened, there is an operating space between the base 10 and the fixed base for disassembling and assembling the lower base 52. Therefore, when the Hall chip 60 and other components need to be repaired and replaced, the upper base 51 can be maintained still fixed on the joystick installation station. After the base 10 is disassembled downward, the flexible circuit board FPC70 is tightened. Thereafter, there is an operating space between the base 10 and the fixed base for disassembling and assembling the lower base 52, and then the lower base 52 and the upper base 51 can be disassembled, so there is no need to disassemble the joystick as a whole, which effectively improves the convenience of repairing and disassembling components such as the Hall chip 60.

[0030] On the basis of the above, if Figure 2 As shown, a flange ring is formed on the outer periphery of the upper base 51, the bottom of the flange ring protrudes from the bottom of the upper base 51, and a ring groove 512 is provided on the inner periphery of the flange ring, and a snap ring 11 elastically snapped into the ring groove 512 is fixed on the outer periphery of the top of the base 10. The snap ring 11 and the ring groove 512 are elastically snapped together, which effectively improves the convenience of disassembly and assembly of the base 10 and the fixed base. Specifically, the base 10 is made of plastic material, and the elasticity of the plastic material itself is utilized. The snap ring 11 and the ring groove 512 can be snapped or disassembled by squeezing the outer periphery of the base 10 to deform during disassembly and assembly, making the disassembly and assembly process more convenient; and due to the rigidity of the plastic material itself, the stability of the connection between the base 10 and the upper base 51 is also guaranteed.

[0031] On the basis of the above, if Figure 1 As shown, the lower protective rubber layer 90 fills the inner bottom of the base 10, and the top surface of the lower protective rubber layer 90 is higher than the top surface of the circuit board 30, so that the lower protective rubber layer 90 can also achieve good support and sealing for the bottom of the circuit board 30, preventing leakage from occurring in the gap between the side wall of the circuit board 30 and the lower protective rubber layer 90, thereby affecting the waterproof effect of the bottom of the circuit board 30.

[0032] In addition, if Figure 1As shown, the connection points between the flexible circuit board FPC70 and the circuit board 30 and the Hall chip 60 are respectively wrapped in the lower protective rubber layer 90 and the upper protective rubber layer 80, which effectively prevents water seepage from occurring at the connection points of the flexible circuit board FPC70. Specifically, the upper protective rubber layer 80 and the lower protective rubber layer 90 are both silicone electronic potting glue, which has the characteristics of strong anti-aging ability, good weather resistance, and excellent impact resistance, and can effectively guarantee the service life of the upper protective rubber layer 80 and the lower protective rubber layer 90. Of course, the upper protective rubber layer 80 and the lower protective rubber layer 90 can be polyurethane potting glue or epoxy resin potting glue, as long as they can achieve good sealing of the Hall chip 60 and the circuit board 30.

[0033] Of course, for those skilled in the art, the present invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0035] The technology, shape and structure parts not described in detail in the present invention are all known technologies.

Claims

1. A joystick with deep protection, comprising a mounting seat assembly, a swing arm assembly (20) and a dust cover (40) installed between the swing arm assembly (20) and the mounting seat assembly, characterized in that: The mounting seat assembly comprises a fixed base for mounting a swing arm assembly (20) and a base (10) mounted at the bottom of the fixed base, a circuit board (30) being mounted at the inner bottom of the base (10), and a lower protective rubber layer (90) being wrapped around the upper surface of the circuit board (30) and the mounting gap with the base (10), a mounting glue injection groove (521) which is concave and has a notch facing downward is provided at the bottom of the fixed base, a Hall chip (60) is fixed in the groove cavity of the mounting glue injection groove (521), and an upper protective rubber layer (80) is provided at the gap between the Hall chip (60) and the groove cavity of the mounting glue injection groove (521), and the Hall chip (60) and the circuit board (30) are connected via a flexible printed circuit board (FPC) (70).

2. A depth protection joystick according to claim 1, characterized in that: The fixed base comprises an upper base (51) and a lower base (52), the upper base (51) being fixed on a joystick installation station, the lower base (52) being detachably installed on the bottom of the upper base (51), the installation glue injection groove (521) being opened at the bottom of the lower base (52), the flexible circuit board FPC (70) being loosely arranged between the Hall chip (60) and the circuit board (30), and when the flexible circuit board FPC (70) is tightened, an operating space for disassembling and installing the lower base (52) is provided between the base (10) and the fixed base.

3. A depth protection joystick according to claim 2, characterized in that: A flange ring is formed on the outer periphery of the upper base (51), the bottom of the flange ring protrudes from the bottom of the upper base (51), and an annular groove (512) is arranged on the inner periphery of the flange ring. A clamping ring (11) is fixed on the outer periphery of the top of the base (10) and is elastically clamped into the annular groove (512).

4. A depth protection joystick according to claim 3, characterized in that: The base (10) is made of plastic.

5. A depth protection joystick according to any one of claims 1 to 4, characterized in that: The lower protective rubber layer (90) fills the inner bottom of the base (10), and the top surface of the lower protective rubber layer (90) is higher than the top surface of the circuit board (30).

6. A depth protection joystick according to any one of claims 1 to 4, characterized in that: The connection points between the flexible circuit board FPC (70), the circuit board (30) and the Hall chip (60) are respectively wrapped inside the lower protective rubber layer (90) and the upper protective rubber layer (80).

7. A depth protection joystick according to any one of claims 1 to 4, characterized in that: The upper protective adhesive layer (80) and the lower protective adhesive layer (90) are both organic silicon electronic potting adhesive.

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