CN219435733U - Detection switch - Google Patents

Abstract

The utility model provides a detection switch, comprising: the shell is provided with a mounting cavity and an opening part which are communicated with each other, and the opening part is used for being connected with a position to be detected; the circuit board is connected with the shell and is positioned at the opening part; the button subassembly, button subassembly includes: the pressing bracket is provided with a containing groove and is connected with the bottom wall of the shell; the key column is arranged on the pressing bracket and the bottom wall in a penetrating way, and one end, close to the bottom wall, of the key column is a conductive end; the elastic piece is sleeved on the key column and is positioned in the accommodating groove so as to enable the conductive end of the key column to be in contact with or separated from the circuit board; waterproof pad, waterproof pad are located between pressfitting support and the diapire. The detection switch solves the problem that the detection switch in the prior art is easy to damage.

Description

Detection switch

Technical Field

The utility model relates to the technical field of detection switches, in particular to a detection switch.

Background

Along with the vigorous rise of the vehicle-mounted positioning terminal market, the intelligent positioning terminal products of the rear loading are more and more popular to users, and particularly, the intelligent positioning terminal products are required to be removed and detected for logistics, security and articles to be positioned at any moment, besides an accurate positioning system, so that the positioner is prevented from being illegally removed.

In the prior art, removal detection is typically achieved in two ways: the first mode is to adopt a light sensing component, and software realizes the detection of whether the locator is dismantled or not through a light intensity algorithm; the second way is to use a detection switch connector to determine if the locator is removed by detecting the physical disconnection and connection of the switch.

The two detection modes mainly have the following defects: the problem of inaccurate light algorithm exists in the detection mode of the light sensing component, for example, the detection cannot be carried out by dismantling equipment at night when light is dark; the detection switch connector cannot realize a waterproof function, particularly, the positioner is installed at the bottom of the automobile body, and when a vehicle passes through a wading road section, water easily enters the detection switch connector to damage the detection switch connector.

Disclosure of Invention

The utility model mainly aims to provide a detection switch so as to solve the problem that the detection switch in the prior art is easy to damage.

In order to achieve the above object, the present utility model provides a detection switch comprising: the shell is provided with a mounting cavity and an opening part which are communicated with each other, and the opening part is used for being connected with a position to be detected; the circuit board is connected with the shell and is positioned at the opening part; the button subassembly, button subassembly includes: the pressing bracket is provided with a containing groove and is connected with the bottom wall of the shell; the key column is arranged on the pressing bracket and the bottom wall in a penetrating way, and one end, close to the bottom wall, of the key column is a conductive end; the elastic piece is sleeved on the key column and is positioned in the accommodating groove so as to enable the conductive end of the key column to be in contact with or separated from the circuit board; waterproof pad, waterproof pad are located between pressfitting support and the diapire.

Further, the waterproof pad comprises a plurality of waterproof bulges arranged at intervals, a plurality of waterproof ribs are arranged on the bottom wall, and the waterproof ribs and the waterproof bulges are sequentially staggered along the direction away from the key column.

Further, the waterproof pad is of a disc-shaped structure, the waterproof protrusions are annular protrusions, the waterproof ribs are of an annular structure, and the annular protrusions are arranged at intervals along the diameter direction of the waterproof pad; and/or, the two adjacent waterproof bulges are in interference fit with the waterproof ribs.

Further, the key assembly includes: the key cap is inserted on the bottom wall and sleeved on the key column, and is abutted with the waterproof pad; the waterproof pad has movable groove, and movable groove is located a plurality of waterproof bellied inboard, and the circumference extension of waterproof pad is followed to the movable groove, and the button cap is located the movable groove and keeps away from waterproof bellied one side.

Further, the button cap includes interconnect's backstop arch and presses the main part, presses the outside that at least part of main part is located the diapire, and the backstop arch is towards keeping away from the direction protrusion of pressing the main part to make backstop arch and the spacing cooperation of diapire, backstop arch and waterproof pad butt.

Further, the holding groove includes first tank section and the second tank section of intercommunication each other, and the minimum cross-sectional area of first tank section is greater than the maximum cross-sectional area of second tank section to form spacing step, and movable recess is located first tank section, in order to when the conducting end of button post and circuit board contact, waterproof pad and spacing step spacing cooperation.

Further, the key post includes: a key post body; the conductive silica gel is connected with the key column main body to form a conductive end, a circuit board feed point is arranged on the circuit board, and the conductive silica gel is contacted with or separated from the circuit board feed point.

Further, the detection switch includes: the first fixing columns are arranged around the circumference of the shell at intervals, are arranged in the mounting cavity of the shell and are connected with the shell; the first fasteners penetrate through the circuit board and the first fixing columns to connect the circuit board and the shell, and the first fixing columns and the first fasteners are arranged in a one-to-one correspondence manner; wherein, the circuit board is less than the cross-sectional area of opening, and each first fixed column is kept away from the one end of diapire and all is located the inboard of opening.

Further, the detection switch further includes: the circuit board is provided with a plurality of locating holes, the locating columns penetrate through the locating holes, and the locating holes and the locating columns are arranged in a one-to-one mode.

Further, the detection switch further includes: the pressing support comprises a plurality of fixing protrusions, the fixing protrusions are arranged around the circumferential space of the pressing support, the fixing protrusions and the second fixing protrusions are arranged in a one-to-one correspondence mode, the second fasteners are inserted into the fixing protrusions and the second fixing protrusions to enable the pressing support to be installed on the bottom wall, and the second fasteners and the fixing protrusions are arranged in a one-to-one correspondence mode.

By applying the technical scheme of the utility model, the utility model provides a detection switch, which comprises the following components: the shell is provided with a mounting cavity and an opening part which are communicated with each other, and the opening part is used for being connected with a position to be detected; the circuit board is connected with the shell and is positioned at the opening part, so that the circuit board can be covered between the position to be detected and the shell to protect the circuit board, wherein the position to be detected can be the bottom of the vehicle; the button subassembly, button subassembly includes: the pressing bracket is provided with a containing groove and is connected with the bottom wall of the shell; the key column is arranged on the pressing bracket and the bottom wall in a penetrating way, and one end, close to the bottom wall, of the key column is a conductive end; the elastic piece is sleeved on the key column and is positioned in the accommodating groove so as to enable the conductive end of the key column to be in contact with or separated from the circuit board; waterproof pad, waterproof pad lie in between pressfitting support and the diapire, like this, can prevent inside the installation cavity of water admission shell through waterproof pad to when the vehicle passes through the road section of wading, prevent that water from causing the damage to the circuit board in the detection switch, improved the reliability of detection switch's use.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows an exploded view of an embodiment of a detection switch according to the present utility model;

fig. 2 shows an exploded view of a key post and a key cap of the detection switch according to the present utility model;

fig. 3 shows a schematic diagram of an assembly of an embodiment of a detection switch according to the utility model.

Wherein the above figures include the following reference numerals:

10. a housing; 100. installing a cavity; 101. an opening portion; 102. a connection protrusion; 11. a bottom wall; 110. waterproof ribs; 20. a circuit board; 200. a circuit board feed point; 30. a key assembly; 31. pressing the bracket; 310. a receiving groove; 32. a key column; 33. an elastic member; 34. a waterproof pad; 340. waterproof bulges; 35. a key cap; 341. a movable groove; 350. a stop protrusion; 351. pressing the main body; 311. a first trough section; 312. a second trough section; 313. a limit step; 314. a fixing protrusion; 320. a key post body; 321. conductive silica gel; 40. a first fixing column; 41. a first fastener; 42. positioning columns; 420. positioning holes; 50. a second fixing column; 51. and a second fastener.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1 to 3, the present utility model provides a detection switch, including: a housing 10, the housing 10 having a mounting cavity 100 and an opening 101 communicating with each other, the opening being for connection with a position to be detected; the circuit board 20, the circuit board 20 connects with the outer casing 10 and locates at opening 101, in this way, can cover the circuit board 20 and set up between waiting to detect the position and outer casing 10, in order to protect the circuit board 20, wherein, waiting to detect the position can be the bottom of the vehicle; the key assembly 30, the key assembly 30 includes: the pressing bracket 31, the pressing bracket 31 has a containing groove 310, the pressing bracket 31 is connected with the bottom wall 11 of the shell 10; the key column 32, the key column 32 wears to locate on pressing support 31 and bottom wall 11, the end close to bottom wall 11 of the key column 32 is the conductive end; the elastic piece 33, the elastic piece 33 is sleeved on the key post 32 and is positioned in the accommodating groove 310, so that the conductive end of the key post 32 is contacted with or separated from the circuit board 20; waterproof pad 34, waterproof pad 34 is located between pressfitting support 31 and diapire 11, like this, can prevent inside the installation cavity 100 of water admission shell 10 through waterproof pad 34 to when the vehicle passes through the wading highway section, prevent that water from causing the damage to the circuit board 20 in the detection switch, improved the reliability of detection switch's use.

Specifically, a connection protrusion 102 is provided at the edge of the opening portion 101 of the housing 10, the connection protrusion 102 extending in the circumferential direction of the housing 10, the connection protrusion 102 being for insertion at a position to be detected so as to make the connection between the housing and the position to be detected tight, thereby preventing water from entering from a gap between the housing and the position to be detected (vehicle), causing damage to the circuit board.

In order to improve the stability of the connection between the waterproof pad 34 and the housing 10, the waterproof pad 34 includes a plurality of waterproof protrusions 340 disposed at intervals, a plurality of waterproof ribs 110 are disposed on the bottom wall 11, and the plurality of waterproof ribs 110 and the plurality of waterproof protrusions 340 are sequentially disposed alternately in a direction away from the key post 32.

In order to further improve the stability and the use reliability of the waterproof pad 34, the waterproof pad 34 has a disc-shaped structure, the waterproof protrusions 340 have annular protrusions, the waterproof rib 110 has an annular structure, and a plurality of annular protrusions are arranged at intervals along the diameter direction of the waterproof pad 34; and/or, the adjacent two waterproof protrusions 340 are in interference fit with the waterproof rib 110.

In the present application, the key assembly 30 includes: the key cap 35 is inserted on the bottom wall 11 and sleeved on the key column 32, and the key cap 35 is abutted with the waterproof pad 34; the waterproof pad 34 has a movable groove 341, the movable groove 341 is located inside the plurality of waterproof protrusions 340, the movable groove 341 extends along a circumferential direction of the waterproof pad 34, and the key cap 35 is located at a side of the movable groove 341 away from the waterproof protrusions 340. Through the above arrangement, the key column 32 and the waterproof pad 34 can be pressed by pressing the key cap 35, and the waterproof pad 34 can have a certain movement range by arranging the movable groove 341 on the waterproof pad 34, so as to prevent the waterproof pad from being separated from between the pressing bracket and the bottom wall 11 due to the pulling force generated by the force applied to the waterproof pad driving the circumferential outer side of the waterproof pad when the waterproof pad 34 is pressed.

Specifically, the key cap 35 includes the backstop protruding 350 of interconnect and presses the main part 351, presses the outside that the main part 351 is located the diapire 11 to the convenience is pressed the key cap, and backstop protruding 350 is kept away from the direction protrusion of pressing the main part 351, so that backstop protruding 350 and diapire 11 spacing fit, backstop protruding 350 and waterproof pad 34 butt prevent that the key cap from droing, improve the structural stability of key cap, simultaneously, through the setting of backstop protruding 350, can realize the preliminary backstop to water.

Specifically, the receiving groove 310 includes a first groove section 311 and a second groove section 312 which are communicated with each other, the minimum sectional area of the first groove section 311 is larger than the maximum sectional area of the second groove section 312 to form a limiting step 313, and the movable groove 341 is located in the first groove section 311 to be in a limiting engagement with the limiting step 313 when the conductive end of the key post 32 is in contact with the circuit board 20, so as to prevent the movement of the waterproof pad 34 in the extending direction of the key post from being excessively large, thereby preventing the waterproof pad from being separated from between the pressing bracket and the bottom wall 11 of the housing. The plane of the cross section of the first slot section 311 and the plane of the cross section of the second slot section 312 are perpendicular to the extending direction of the key post.

Specifically, the key post 32 includes: a key post body 320; the conductive silica gel 321, the conductive silica gel 321 is connected with the button post main body 320 to form the conductive end, be provided with circuit board on the circuit board 20 and feed a little 200, conductive silica gel 321 and circuit board feed a little 200 contact or separation, like this, owing to adopt conductive silica gel and circuit board contact disconnection, solved ordinary button shell fragment and receive external force all the time and not kick-backed easily to form fatigue deformation's problem. The circuit board feed point 200 is a metal feed point.

Wherein, the key post body 320 is adhered to the conductive silica gel 321.

In this application, the detection switch includes: the first fixing columns 40 are arranged at intervals around the circumference of the shell 10, and the first fixing columns 40 are arranged in the mounting cavity 100 of the shell 10 and connected with the shell 10; a plurality of first fasteners 41, the first fasteners 41 penetrating the circuit board 20 and the first fixing posts 40 to connect the circuit board 20 and the housing 10, the plurality of first fixing posts 40 and the plurality of first fasteners 41 being disposed in one-to-one correspondence; wherein, the circuit board 20 is smaller than the cross-sectional area of the opening 101, and one end of each first fixing post 40 away from the bottom wall 11 is located inside the opening 101. Through the above-mentioned setting, can make the installation of circuit board 20 stable through a plurality of first fixed columns 40, and make circuit board 20 be located shell 10 to through shell protection circuit board 20, combine the setting of the waterproof pad of this application simultaneously, can prevent that water from getting into the inside damage that causes the circuit board of shell from the clearance between key assembly and the shell.

Specifically, the detection switch further includes: the positioning columns 42 are connected with the first fixing columns 40 in a one-to-one correspondence manner, each positioning column 42 protrudes out of the first fixing column 40 along the direction away from the bottom wall 11, a plurality of positioning holes 420 are formed in the circuit board 20, the positioning columns 42 penetrate through the positioning holes 420, and the positioning holes 420 and the positioning columns 42 are arranged in a one-to-one correspondence manner. With the above arrangement, the position of the circuit board can be positioned by passing the positioning posts 42 through the positioning holes 420, and then the circuit board 20 can be fixed by passing the first fastening members 41 through the first fixing posts 40 and the circuit board 20, so that the positional deviation of the circuit board can be prevented.

For the diapire of connecting pressfitting support and shell, make and connect steadily between the two, the detecting switch of this application still includes: the pressing bracket 31 includes a plurality of fixing protrusions 314, the plurality of fixing protrusions 314 are disposed around the circumferential space of the pressing bracket 31, the plurality of fixing protrusions 314 and the plurality of second fixing posts 50 are disposed in one-to-one correspondence, the second fasteners 51 are inserted on the fixing protrusions 314 and the second fixing posts 50 to mount the pressing bracket 31 on the bottom wall, and the plurality of second fasteners 51 and the plurality of fixing protrusions 314 are disposed in one-to-one correspondence.

Wherein, first fastener and second fastener are bolt or screw.

In the specific facts of the present utility model, the detection switch achieves line closure by pressing the end of the key cap protruding from the housing 10 to be flush with the outer surface of the bottom wall 11 of the housing (at which time the retainer is installed at a predetermined position so that the retainer presses the key cap) so that the conductive silica gel of the key post of the key assembly is in point contact with the circuit board feed; when the locator is illegally removed, the external pressure is released, and the internal elastic piece 33 drives the key assembly 30 to reset to the original state, so that the conductive silica gel is separated from the circuit board, and the circuit board circuit disconnection detection is realized.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

the utility model provides a detection switch, comprising: a housing 10, the housing 10 having a mounting cavity 100 and an opening 101 communicating with each other, the opening being for connection with a position to be detected; the circuit board 20, the circuit board 20 connects with the outer casing 10 and locates at opening 101, in this way, can cover the circuit board 20 and set up between waiting to detect the position and outer casing 10, in order to protect the circuit board 20, wherein, waiting to detect the position can be the bottom of the vehicle; the key assembly 30, the key assembly 30 includes: the pressing bracket 31, the pressing bracket 31 has a containing groove 310, the pressing bracket 31 is connected with the bottom wall 11 of the shell 10; the key column 32, the key column 32 wears to locate on pressing support 31 and bottom wall 11, the end close to bottom wall 11 of the key column 32 is the conductive end; the elastic piece 33, the elastic piece 33 is sleeved on the key post 32 and is positioned in the accommodating groove 310, so that the conductive end of the key post 32 is contacted with or separated from the circuit board 20; waterproof pad 34, waterproof pad 34 is located between pressfitting support 31 and diapire 11, like this, can prevent inside the installation cavity 100 of water admission shell 10 through waterproof pad 34 to when the vehicle passes through the wading highway section, prevent that water from causing the damage to the circuit board 20 in the detection switch, improved the reliability of detection switch's use.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A detection switch, comprising:

a housing (10), wherein the housing (10) is provided with a mounting cavity (100) and an opening part (101) which are communicated with each other, and the opening part (101) is used for being connected with a position to be detected;

a circuit board (20), the circuit board (20) being connected to the housing (10) and located at the opening (101);

a key assembly (30), the key assembly (30) comprising:

a press-fit bracket (31), the press-fit bracket (31) having a receiving groove (310), the press-fit bracket (31) being connected with the bottom wall (11) of the housing (10);

the key column (32), the key column (32) is arranged on the pressing bracket (31) and the bottom wall (11) in a penetrating way, and one end of the key column (32) close to the bottom wall (11) is a conductive end;

the elastic piece (33) is sleeved on the key column (32) and is positioned in the accommodating groove (310) so as to enable the conductive end of the key column (32) to be in contact with or separated from the circuit board (20);

and the waterproof pad (34) is positioned between the pressing bracket (31) and the bottom wall (11).

2. The detection switch according to claim 1, wherein the waterproof pad (34) includes a plurality of waterproof protrusions (340) disposed at intervals, a plurality of waterproof ribs (110) are disposed on the bottom wall (11), and a plurality of the waterproof ribs (110) and a plurality of the waterproof protrusions (340) are disposed alternately in sequence in a direction away from the key post (32).

3. The detecting switch according to claim 2, wherein,

the waterproof pad (34) is of a disc-shaped structure, the waterproof protrusions (340) are annular protrusions, the waterproof ribs (110) are of an annular structure, and a plurality of annular protrusions are arranged at intervals along the diameter direction of the waterproof pad (34); and/or the number of the groups of groups,

and two adjacent waterproof protrusions (340) are in interference fit with the waterproof ribs (110).

4. The detection switch according to claim 2, wherein the key assembly (30) comprises:

the key cap (35) is inserted on the bottom wall (11) and sleeved on the key column (32), and the key cap (35) is abutted with the waterproof pad (34);

the waterproof pad (34) is provided with a movable groove (341), the movable groove (341) is located on the inner sides of the waterproof protrusions (340), the movable groove (341) extends along the circumference of the waterproof pad (34), and the key cap (35) is located on one side, away from the waterproof protrusions (340), of the movable groove (341).

5. The detecting switch of claim 4, wherein the detecting switch,

the key cap (35) comprises a stop protrusion (350) and a pressing body (351) which are connected with each other, at least part of the pressing body (351) is located on the outer side of the bottom wall (11), the stop protrusion (350) protrudes towards a direction away from the pressing body (351) so that the stop protrusion (350) is in limit fit with the bottom wall (11), and the stop protrusion (350) is in butt joint with the waterproof pad (34).

6. The detecting switch of claim 4, wherein the detecting switch,

the holding groove (310) comprises a first groove section (311) and a second groove section (312) which are communicated with each other, the minimum cross-sectional area of the first groove section (311) is larger than the maximum cross-sectional area of the second groove section (312) so as to form a limit step (313), the movable groove (341) is positioned in the first groove section (311) so that when the conductive end of the key column (32) is in contact with the circuit board (20), the waterproof pad (34) is in limit fit with the limit step (313).

7. The detection switch according to any one of claims 1 to 6, wherein the key post (32) comprises:

a key post body (320);

the conductive silica gel (321), conductive silica gel (321) with button post main part (320) are connected, so as to form conductive end, be provided with circuit board on circuit board (20) and feed point (200), conductive silica gel (321) with circuit board feeds point (200) contact or separation.

8. The detection switch according to any one of claims 1 to 6, characterized in that the detection switch comprises:

the first fixing columns (40) are arranged at intervals around the circumference of the shell (10), and the first fixing columns (40) are arranged in the mounting cavity (100) of the shell (10) and connected with the shell (10);

the first fasteners (41) are arranged on the circuit board (20) and the first fixing columns (40) in a penetrating mode to connect the circuit board (20) and the shell (10), and the first fixing columns (40) and the first fasteners (41) are arranged in a one-to-one correspondence mode;

wherein the circuit board (20) is smaller than the cross-sectional area of the opening (101), and one end of each first fixing column (40) far away from the bottom wall (11) is located inside the opening (101).

9. The detection switch of claim 8, further comprising:

a plurality of reference columns (42), a plurality of reference columns (42) with a plurality of first fixed column (40) are connected in one-to-one, along keeping away from the direction of diapire (11), each reference column (42) protrusion with first fixed column (40), be provided with a plurality of locating holes (420) on circuit board (20), reference column (42) are worn to establish in locating hole (420), a plurality of locating hole (420) and a plurality of reference column (42) set up in one-to-one.

10. The detection switch according to any one of claims 1 to 6, characterized in that the detection switch further comprises:

a plurality of second fixed columns (50) and a plurality of second fastener (51), a plurality of second fixed columns (50) set up on diapire (11), pressfitting support (31) are including a plurality of fixed protruding (314), and is a plurality of fixed protruding (314) are around the circumference interval setting of pressfitting support (31), a plurality of fixed protruding (314) and a plurality of second fixed column (50) set up one-to-one, second fastener (51) are inserted and are established fixed protruding (314) with on second fixed column (50), so as to with pressfitting support (31) are installed on the diapire, a plurality of second fastener (51) and a plurality of fixed protruding (314) set up one-to-one.