CN211182049U - Normally closed switch for vehicle seat - Google Patents

Abstract

The utility model relates to a normally closed switch for vehicle seat, including the switch inner chamber that comprises switch casing, switch upper cover, switch lower cover, the switch upper cover is worn to be equipped with the button pole by the position of back, the bottom of button pole is connected with the button seat, still be equipped with reset spring between button seat and the switch lower cover, the front side of button seat is fixed with V-arrangement conductive snap spring, the switch inner chamber respectively is equipped with L shape electrode inserted sheet in the left and right sides near the front position, two L shape electrode inserted sheets are in the position of leaning on and the end contact of two arms of V-arrangement conductive snap spring, L shape electrode inserted sheet erect the end and have seted up in the position of leaning on the lower and dodge the mouth.

Description

Normally closed switch for vehicle seat

Technical Field

The utility model relates to a vehicle seat field especially relates to a normally closed switch for vehicle seat.

Background

With the scientific and technological development in the field of vehicle transportation, functional electric appliances on vehicles are more and more, especially special vehicles such as mowing vehicles and the like, and many times, when people temporarily leave the vehicles during temporary parking, some functional electric appliances need to be turned on, for example: the parking solenoid valve needs to be opened to lock wheels, and the temporary stop warning lamp also needs to be opened, however, in the actual operation, the situation of forgetting to open always occurs, so that safety accidents are easy to occur, and a control structure is needed, so that when a person leaves a vehicle, functional electric appliances needing to be opened can be opened even if the person does not do any operation.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a normally closed switch for a vehicle seat, which is installed on the vehicle seat, when the vehicle stops, and when the person leaves the vehicle seat, the switch is in a normally closed state, so that the corresponding functional electric appliance to be opened is in a working state, and when the person returns to the vehicle seat, the switch is switched from the normally closed state to an open state, so that the corresponding functional electric appliance stops working; simple structure, convenient installation and low cost.

The technical scheme includes that the normally closed switch for the vehicle seat comprises a switch inner cavity formed by a switch shell, a switch upper cover and a switch lower cover, a button rod penetrates through the position, close to the rear, of the switch upper cover, a button seat which moves up and down in the switch inner cavity is connected to the bottom end of the button rod, a reset spring is further arranged between the button seat and the switch lower cover, a V-shaped conductive snap spring is fixed to the front side of the button seat through a fixing portion, L-shaped electrode insertion sheets are respectively arranged on the left side and the right side of the position, close to the front, of the switch inner cavity, the vertical ends of the two L-shaped electrode insertion sheets are in contact with the tail ends of two arms of the V-shaped conductive snap spring, an avoiding opening is formed in the position, close to the vertical end of the L-shaped electrode insertion sheet, the position, of the avoiding opening is separated from a L-shaped electrode insertion sheet when the V-shaped conductive snap spring moves downwards, and the horizontal end of the L-shaped electrode penetrates out of the switch shell forwards.

Furthermore, a first poking column is arranged in the middle of the front side of the button seat, and second poking columns are respectively arranged at the positions close to the left and the right of the front side; a V-shaped conductive snap spring is also assembled between the first shifting column and the two second shifting columns; the opening of the V-shaped conductive clamp spring faces downwards, the tip of the V-shaped conductive clamp spring is pressed on the first shifting column, and two arms of the V-shaped conductive clamp spring respectively abut against the bottom side of the corresponding second shifting column.

Furthermore, the tail ends of two arms of the V-shaped conductive snap spring are respectively bent inwards to form arc-shaped parts, and the V-shaped conductive snap spring is contacted with the L-shaped electrode inserting piece through the outer sides of the arc-shaped parts.

Furthermore, a connecting column is arranged at the position of the switch lower cover corresponding to the return spring, and a groove is arranged at the position of the bottom surface of the button seat corresponding to the return spring; one end of the reset spring is inserted into the groove, and the other end of the reset spring is sleeved on the connecting column.

Furthermore, an opening is formed in the switch shell in a downward mode at the position where the horizontal end of the L-shaped electrode insertion piece penetrates through the opening, a protruding portion is arranged at the position, corresponding to the opening, of the lower switch cover, and when the lower switch cover and the switch shell are assembled and fixed, the protruding portion is abutted to the bottom side of the horizontal end of the L-shaped electrode insertion piece at the opening.

Furthermore, the switch upper cover and the switch shell are of an integrated structure, and the switch lower cover is fixedly connected with the switch shell.

Furthermore, the edge of the switch upper cover is exposed out of the switch shell, and a reinforcing rib is arranged between the switch upper cover and the switch shell and used for improving the connection strength between the switch upper cover and the switch shell.

Further, when the normally closed switch is installed on the seat, the normally closed switch is fixed on the seat framework through the installation frame; the normally closed switch is clamped on the mounting frame through the edge of the switch upper cover; the edge of the left side and the edge of the right side of the switch upper cover are provided with notches at positions close to the front, so that the switch upper cover is convenient to handle and assemble and disassemble.

Furthermore, the switch shell is also provided with a clamping piece at the position below the two gaps; the pinch piece has elasticity, the bottom end of the pinch piece is fixed at the position below the switch shell, and the top end of the pinch piece is obliquely arranged outwards; the outer side of the pinching piece close to the top end is provided with a plurality of step clamping surfaces, and the top end is provided with a pinching part; when the normally closed switch is fixed on the mounting bracket, the step clamping surface of the pinch piece of the switch shell forms the upper limit of the normally closed switch, and when the normally closed switch is detached, the pinch parts of the two pinch pieces are pinched, so that the top ends of the two pinch pieces move towards the switch shell, the step clamping surface is separated from the bottom side of the mounting bracket, and the normally closed switch can be taken out.

Furthermore, a gland which is assembled with the mounting frame in a vertically sliding manner is also arranged above the mounting frame; the top side of a button rod of the normally closed switch is abutted against the bottom side of the gland.

The utility model has the advantages that: the utility model discloses a normally closed switch for vehicle seat, V-arrangement electrically conducts jump ring opening down, the mode that the electrode inserted sheet set up the breach, can realize the function of normal state closure, and this kind of design, simple structure, processing is convenient; the design mode of the first shifting column and the second shifting column not only facilitates fixing of the V-shaped conductive clamp spring, but also enables the V-shaped conductive clamp spring to move smoothly; the switch is in a normal closed state when the vehicle stops and a person leaves the vehicle seat, so that the corresponding functional electric appliance to be opened is in a working state, and when the person returns to the vehicle seat, the switch is switched from the normal closed state to an open state, so that the corresponding functional electric appliance stops working; when the normally closed switch is installed on a seat, the upper switch cover is used as a supporting part to be integrally and fixedly supported, and the integral structure of the upper switch cover and the switch shell is designed, so that the connection strength of the upper switch cover and the switch shell can be enhanced, a plurality of reinforcing ribs are added, the connection strength is further improved, and the service life of the normally closed switch is ensured; the upper cover of the switch and the pinching piece are fixed on the mounting frame together, so that the assembly and disassembly are convenient; the whole structure is simple, the assembly is convenient, and the cost is low.

Drawings

FIG. 1 is a schematic view of a normally closed switch for a vehicle seat of an embodiment;

FIG. 2 is a schematic top view of a normally closed switch for a vehicle seat of an embodiment;

FIG. 3 is a schematic cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic cross-sectional view of B-B of FIG. 2;

FIG. 5 is a schematic diagram of an open state of a normally closed switch for a vehicle seat of the embodiment;

fig. 6 is a seat-mounted schematic view of a normally closed switch for a vehicle seat of an embodiment.

Detailed Description

In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and embodiments, which are only used for explaining the present invention and are not limited to the protection scope of the present invention.

Examples

As shown in fig. 1 to 6, the present embodiment provides a normally closed switch for a vehicle seat, which includes a switch inner cavity composed of a switch housing 1, a switch upper cover 2 and a switch lower cover 3, a button rod 4 penetrates through a position on the switch upper cover 2 near the rear, a button base 11 moving up and down in the switch inner cavity is connected to a bottom end of the button rod 4, a return spring 15 is further disposed between the button base 11 and the switch lower cover 3, a V-shaped conductive snap spring 14 is fixed to a front side of the button base 11 through a fixing portion, L-shaped electrode insertion sheets 5 are respectively disposed on left and right sides of the switch inner cavity near the front, upright ends of two L-shaped electrode insertion sheets 5 contact with tail ends of two arms of the V-shaped conductive snap spring 14 at a position near the upper, an upright end of the L-shaped electrode insertion sheet 5 is disposed at a position near the lower position, an avoiding opening 16 is used for separating the V-shaped conductive snap spring 14 from the L-shaped electrode insertion sheet 5 at a position when the V-shaped conductive snap spring 14 moves downward, and a horizontal end of the L-shaped electrode.

In the normally closed switch for the vehicle seat of the present embodiment, a first toggle lever 12 is disposed at the middle position of the front side of the button seat 11, and second toggle levers 13 are disposed at the left and right positions of the front side; a V-shaped conductive snap spring 14 is also assembled between the first shifting column 12 and the two second shifting columns 13; the opening of the V-shaped conductive snap spring 14 faces downwards, the tip of the V-shaped conductive snap spring is pressed on the first shifting column 12, and two arms of the V-shaped conductive snap spring respectively abut against the bottom sides of the corresponding second shifting columns 13.

In the normally closed switch for the vehicle seat of the embodiment, the ends of the two arms of the V-shaped conductive snap spring 14 are respectively bent inwards to form an arc-shaped part, and the V-shaped conductive snap spring 14 is contacted with the L-shaped electrode insert 5 through the outer side of the arc-shaped part.

In the normally closed switch for the vehicle seat of the embodiment, the switch lower cover 3 is provided with a connecting column 17 at a position corresponding to a return spring 15, and the bottom surface of the button seat 11 is provided with a groove at a position corresponding to the return spring; one end of the return spring 15 is inserted into the groove, and the other end of the return spring is sleeved on the connecting column 17.

In the normally closed switch for the vehicle seat of the embodiment, the switch case 1 is provided with an opening downward at a position where the horizontal end of the L-shaped electrode tab 5 passes through, the switch lower cover 3 is provided with a protruding part 21 at a position corresponding to the opening, and when the switch lower cover is assembled and fixed with the switch case 1, the protruding part 21 is pressed against the bottom side of the horizontal end of the L-shaped electrode tab 5 at the opening.

In the normally closed switch for the vehicle seat of the present embodiment, the switch upper cover 2 and the switch housing 1 are of an integral structure, and the switch lower cover 3 is fixedly connected with the switch housing 1.

In the normally closed switch for the vehicle seat of the present embodiment, the edge of the switch upper cover 2 is exposed to the outside of the switch housing 1, and a reinforcing rib 10 is provided between the switch upper cover 2 and the switch housing 1, so as to improve the connection strength between the switch upper cover 2 and the switch housing 1.

In the normally closed switch for the vehicle seat of the embodiment, when the normally closed switch is installed on the seat, the normally closed switch is fixed on the seat frame 18 through the mounting frame 19; the normally closed switch is clamped on the mounting frame 19 through the edge of the switch upper cover 2; the edges of the left side and the right side of the switch upper cover 2 are provided with notches 7 at the positions close to the front for facilitating the hand-held assembly and disassembly.

In the normally closed switch for the vehicle seat of the embodiment, the switch shell 1 is further provided with a pinch piece 6 at positions below the two notches 7; the pinch piece 6 has elasticity, the bottom end of the pinch piece is fixed at the position below the switch shell 1, and the top end of the pinch piece is obliquely arranged outwards; the outer side of the pinching piece 6 close to the top end is provided with a plurality of step clamping surfaces 9, and the top end is provided with a pinching part 8; when the normally closed switch is fixed on the mounting frame 19, the step clamping surface 9 of the pinch piece 6 of the switch shell 1 forms the upper limit of the normally closed switch, and when the normally closed switch is detached, the pinch parts 8 of the two pinch pieces 6 are pinched, so that the top ends of the two pinch pieces 6 move towards the switch shell 1, the step clamping surface 9 is separated from the bottom side of the mounting frame 19, and the normally closed switch can be taken out.

In the normally closed switch for the vehicle seat of the embodiment, a gland 20 which is assembled with the mounting rack 19 in a vertical sliding manner is further arranged above the mounting rack 19; the top side of the button rod 4 of the normally closed switch abuts against the bottom side of the gland 20.

In the normally closed switch for the vehicle seat, the switch upper cover and the switch shell are produced as one component, the button rod and the button seat are produced as one component, during assembly, the V-shaped conductive snap spring with the downward opening is assembled with the button seat to serve as a component A, the electrode insert is assembled with the switch shell, then the component A is arranged in the switch inner cavity, the button rod penetrates through the switch upper cover, the V-shaped conductive snap spring is contacted with the electrode insert, then the reset spring is arranged, and the switch lower cover and the switch shell are fixed through ultrasonic welding, so that the assembly of the normally closed switch is completed; when the normally closed switch is used, the normally closed switch is connected in series into a power supply circuit of equipment to be controlled, when a vehicle is in a temporary stop, after a person leaves a seat, a V-shaped conductive clamp spring of the normally closed switch is lifted and moves from an avoiding opening to be in re-contact with an electrode inserting sheet, so that the two electrode inserting sheets are communicated, a corresponding functional electric appliance works, the person sits back to the seat, the normally closed switch is in an off state, and the corresponding functional electric appliance is disconnected.

In the normally closed switch for the vehicle seat, if the V-shaped conductive snap spring is assembled with the button seat with the opening facing upwards, the normally open switch can be assembled when the electrode insert is not opened; for the two kinds of switches, when in production, the parts of the normally closed switch are almost the same as those of the normally open switch, only the electrode insert is slightly different, only the electrode insert of the normally open switch is needed to be punched after being molded, and the electrode insert of the normally closed switch is obtained.

According to the normally closed switch for the vehicle seat, the normally closed function can be realized in a mode that the opening of the V-shaped conductive clamp spring is downward and the electrode inserting sheet is provided with the notch, and the design mode is simple in structure and convenient to process; the design mode of the first shifting column and the second shifting column not only facilitates fixing of the V-shaped conductive clamp spring, but also enables the V-shaped conductive clamp spring to move smoothly; the switch is in a normal closed state when the vehicle stops and a person leaves the vehicle seat, so that the corresponding functional electric appliance to be opened is in a working state, and when the person returns to the vehicle seat, the switch is switched from the normal closed state to an open state, so that the corresponding functional electric appliance stops working; when the normally closed switch is installed on a seat, the upper switch cover is used as a supporting part to be integrally and fixedly supported, and the integral structure of the upper switch cover and the switch shell is designed, so that the connection strength of the upper switch cover and the switch shell can be enhanced, a plurality of reinforcing ribs are added, the connection strength is further improved, and the service life of the normally closed switch is ensured; the upper cover of the switch and the pinching piece are fixed on the mounting frame together, so that the assembly and disassembly are convenient; the whole structure is simple, the assembly is convenient, and the cost is low.

The above-mentioned embodiments should not limit the present invention in any way, and all the technical solutions obtained by adopting equivalent replacement or equivalent conversion fall within the protection scope of the present invention.

Claims (10)

1. A normally closed switch for a vehicle seat is characterized by comprising a switch inner cavity consisting of a switch shell, a switch upper cover and a switch lower cover, wherein a button rod penetrates through the position, close to the rear, of the switch upper cover, a button seat which moves up and down in the switch inner cavity is connected to the bottom end of the button rod, a return spring is further arranged between the button seat and the switch lower cover, a V-shaped conductive snap spring is fixed to the front side of the button seat through a fixing part, L-shaped electrode insertion sheets are respectively arranged on the left side and the right side of the switch inner cavity, the vertical ends of the two L-shaped electrode insertion sheets are in contact with the tail ends of two arms of the V-shaped conductive snap spring, an avoidance opening is formed in the position, close to the vertical end of the L-shaped electrode insertion sheet, and used for enabling the V-shaped conductive snap spring to be separated from the L-shaped electrode insertion sheet when the V-shaped conductive snap spring moves downwards, and the horizontal end of the L-shaped electrode insertion sheet.

2. The normally closed switch for a vehicle seat according to claim 1, characterized in that: a first poking column is arranged in the middle of the front side of the button seat, and second poking columns are respectively arranged at the positions close to the left and right of the front side; a V-shaped conductive snap spring is also assembled between the first shifting column and the two second shifting columns; the opening of the V-shaped conductive clamp spring faces downwards, the tip of the V-shaped conductive clamp spring is pressed on the first shifting column, and two arms of the V-shaped conductive clamp spring respectively abut against the bottom side of the corresponding second shifting column.

3. The normally closed switch for the vehicle seat as claimed in claim 2, wherein the ends of the two arms of the V-shaped conductive snap spring are bent inward to form an arc-shaped portion, and the V-shaped conductive snap spring is in contact with the L-shaped electrode insert through the outer side of the arc-shaped portion.

4. The normally closed switch for a vehicle seat according to claim 1, characterized in that: the lower switch cover is provided with a connecting column at a position corresponding to the return spring, and the bottom surface of the button seat is provided with a groove at a position corresponding to the return spring; one end of the reset spring is inserted into the groove, and the other end of the reset spring is sleeved on the connecting column.

5. The normally closed switch for the vehicle seat as claimed in claim 1, wherein the switch case has an opening formed downward at a position where the horizontal end of the L-shaped electrode tab passes through, and the switch lower cover has a protrusion formed at a position corresponding to the opening, and when the switch lower cover is fixedly assembled with the switch case, the protrusion is formed at the opening so as to abut against the bottom side of the horizontal end of the L-shaped electrode tab.

6. The normally closed switch for a vehicle seat according to claim 1, characterized in that: the switch upper cover and the switch shell are of an integrated structure, and the switch lower cover is fixedly connected with the switch shell.

7. The normally closed switch for a vehicle seat according to claim 6, characterized in that: the edge of the switch upper cover is exposed out of the switch shell, and a reinforcing rib is arranged between the switch upper cover and the switch shell and used for improving the connection strength between the switch upper cover and the switch shell.

8. The normally closed switch for a vehicle seat according to claim 7, characterized in that: when the normally closed switch is installed on the seat, the normally closed switch is fixed on the seat framework through the installation frame; the normally closed switch is clamped on the mounting frame through the edge of the switch upper cover; the edge of the left side and the edge of the right side of the switch upper cover are provided with notches at positions close to the front, so that the switch upper cover is convenient to handle and assemble and disassemble.

9. The normally closed switch for a vehicle seat according to claim 8, characterized in that: the switch shell is also provided with a pinch piece at the position below the two gaps; the pinch piece has elasticity, the bottom end of the pinch piece is fixed at the position below the switch shell, and the top end of the pinch piece is obliquely arranged outwards; the outer side of the pinching piece close to the top end is provided with a plurality of step clamping surfaces, and the top end is provided with a pinching part; when the normally closed switch is fixed on the mounting bracket, the step clamping surface of the pinch piece of the switch shell forms the upper limit of the normally closed switch, and when the normally closed switch is detached, the pinch parts of the two pinch pieces are pinched, so that the top ends of the two pinch pieces move towards the switch shell, the step clamping surface is separated from the bottom side of the mounting bracket, and the normally closed switch can be taken out.

10. The normally-closed switch for a vehicle seat according to claim 8 or 9, characterized in that: a gland which is assembled with the mounting frame in a vertical sliding manner is also arranged above the mounting frame; the top side of a button rod of the normally closed switch is abutted against the bottom side of the gland.

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