A locking and flipping switch for a cab

Abstract

The present invention discloses a locking and flipping switch for a cab, which includes a base assembly, a lower housing, an upper sheath and an external wiring harness; the base assembly includes a base, a static contact piece, a moving spring piece and a first compression spring. The bottom end of the static contact piece is inserted into a square hole at the top of the base. The moving spring piece is pressed against the bottom end of the static contact piece by the first compression spring. The top of the base is butted against the upper sheath, and the bottom is riveted to the lower housing. A push rod is arranged inside the lower housing, and a second compression spring is sleeved on the push rod. The top end of the push rod passes through the first compression spring and is riveted to the moving spring piece; the wire of the external wiring harness penetrates through the top surface of the upper sheath and is welded to the top end of the static contact piece. The structure of the present invention is simple and reasonable, with low manufacturing cost. It can be connected with devices such as a body controller and a switch driving device to form a cab flipping control system, achieving the purpose of cab flipping or alarming. The performance of automatic flipping is reliable, and the protection level is high. It is applicable to commercial vehicles and trucks.

Description

Technical Field

[0001] The invention relates to the technical field of automobiles, in particular to a locking tumble switch for a cab. Background Art

[0002] At present, most of the switches used in commercial vehicles or trucks are mechanical structures and are manually operated outside the vehicle body. They are not only complex in structure, poor in reliability, and low in protection level, but also have high manufacturing costs and are inconvenient. Summary of the invention

[0003] The object of the present invention is to provide a cab locking tumble switch based on electrified operation, which has a reasonable and reliable structure, low manufacturing cost and high protection level.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a cab locking flip switch, comprising a base assembly, a lower shell, an upper sheath and an external wiring harness; the base assembly comprises a base, a static contact piece, a dynamic spring piece and a first compression spring. The bottom end of the static contact piece is inserted into a square hole at the top of the base, the dynamic spring piece is pressed against the bottom end of the static contact piece through the first compression spring, the bottom end of the first compression spring is fixed in the base, the top of the base is butted against the upper sheath, the bottom of the base is riveted to the lower shell, a push rod is inserted into the lower shell, a second compression spring is sleeved on the push rod, the top end of the push rod passes through the first compression spring and is riveted to the dynamic spring piece; the wires of the external wiring harness pass through the top end surface of the upper sheath and are welded to the top end of the static contact piece.

[0006] Optionally, the movable spring sheet is an axisymmetric sheet structure, a through hole connected to the push rod is opened at the center of the movable spring sheet, and a contact protrusion is respectively arranged on both sides of the movable spring sheet.

[0007] Optionally, the static contact piece is an L-shaped metal contact piece; the static contact piece is fixed in the square hole by riveting, and is sealed by pouring resin and curing.

[0008] Optionally, the base is a cylindrical base, a circle of first shoulder is arranged on the outside of the cylindrical base, the lower shell and the upper sleeve are respectively connected to the lower end face and upper end face of the first shoulder, and a sealing ring is arranged between the lower shell and the first shoulder.

[0009] Optionally, the external wiring harness includes electric wires, a corrugated tube sleeved on the outside of the electric wires, and a wiring harness sheath, wherein the wiring harness sheath is provided with connection pins, one end of the electric wires extends into the wiring harness sheath and is connected to the connection pins, and the other end of the electric wires is used for welding to the static contact piece; a wire clip is provided on the outside of the corrugated tube.

[0010] Optionally, solder is provided at the welding joint between the wire and the static contact piece.

[0011] Optionally, two static contact pieces are symmetrically arranged. One wire is welded to each static contact piece, and each wire is connected to one of the connection pins; a tape is sleeved outside the two wires, and the tape is located between the upper sheath and the corrugated pipe.

[0012] Optionally, a wire tube for a single wire to pass through is provided at the top of the upper sheath.

[0013] Optionally, a funnel-shaped wire sheath is sleeved outside the wire. The funnel-shaped wire sheath is located between the corrugated pipe and the wire harness sheath, and the large end of the funnel-shaped wire sheath is close to the corrugated pipe.

[0014] Optionally, a second shoulder is provided on the push rod. The top surface of the second shoulder abuts against the bottom end of the lower housing. A washer is sleeved on the push rod above the second shoulder, and a push rod sheath is sleeved outside the push rod below the second shoulder. The push rod sheath is threadedly connected to the bottom end of the lower housing.

[0015] The present invention has achieved the following technical effects compared with the prior art:

[0016] The locking flip switch for a cab provided by the present invention has a simple and reasonable structure and low manufacturing cost. It can be connected to devices such as a body controller and a switch driving device to form a cab flip control system, achieving the purpose of cab flipping or alarming. The performance of automatic flipping is reliable, and it is applicable to commercial vehicles and trucks. At the same time, the base assembly is covered by the lower housing and the upper sheath, which not only has the effects of dust and water protection and extended service life, but also can improve the protection level of the switch and the use quality of the switch; in addition, the components are connected by welding, riveting and / or resin perfusion, which helps to improve the protection level of the switch and is beneficial to improving the operation reliability of the overall structure of the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the overall structure of the locking flip switch for a cab of the present invention;

[0019] Figure 2Explosion diagram of the locking and flipping switch for the cab of the present invention;

[0020] Figure 3 Structural schematic diagram of the moving reed of the present invention;

[0021] Figure 4 For Figure 3 Front view;

[0022] Figure 5 Structural schematic diagram of the static contact piece of the present invention;

[0023] Figure 6 Structural schematic diagram of the push rod sheath of the present invention;

[0024] Figure 7 Structural schematic diagram of the upper sheath of the present invention;

[0025] Figure 8 Structural schematic diagram of the sealing ring of the present invention;

[0026] Among them, the reference numerals are: 1, resin; 2, lower housing; 3, upper sheath; 3-1, wire tube; 4, base; 5, static contact piece; 6, moving reed; 6-1, through hole; 6-2, contact protrusion; 7, square hole; 8, first compression spring; 9, push rod; 10, second compression spring; 12, first shoulder; 13, sealing ring; 14, wire; 15, bellows; 16, wire harness sheath; 17, wire clip; 18, solder; 19, tape; 20, funnel-shaped wire sheath; 21, second shoulder; 22, washer; 23, push rod sheath. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0028] The purpose of the present invention is to provide a locking and flipping switch for the cab with reasonable and reliable structure, low manufacturing cost and high protection level.

[0029] Based on this, the present invention provides a locking and flipping switch for a cab, which includes a base assembly, a lower housing, an upper sheath, and an external wiring harness; the base assembly includes a base, a static contact piece, and a moving spring piece. The bottom end of the static contact piece is inserted into a square hole at the top of the base. The moving spring piece is pressed against the bottom end of the static contact piece by a first compression spring, and the bottom end of the first compression spring is fixed inside the base. The top and bottom of the base are respectively riveted to the upper sheath and the lower housing. A push rod is inserted through the lower housing, and a second compression spring is sleeved on the push rod. The top end of the push rod passes through the first compression spring and is riveted to the moving spring piece; the wire of the external wiring harness passes through the top end face of the upper sheath and is welded to the top end of the static contact piece.

[0030] The locking and flipping switch for a cab provided by the present invention has a simple and reasonable structure and a low manufacturing cost. It can be connected to devices such as a body controller and a switch driving device to form a cab flipping control system, achieving the purpose of cab flipping or alarming. The performance of automatic flipping is reliable and it is applicable to commercial vehicles and trucks. At the same time, the base assembly is covered by the lower housing and the upper sheath, which not only has the effects of dust and water protection and extended service life, but also can improve the protection level of the switch and the quality of use of the switch; in addition, the components are connected by welding, riveting or resin pouring, which helps to improve the protection level of the switch and is beneficial to improving the operation reliability of the overall structure of the switch.

[0031] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Embodiment 1:

[0033] As Figures 1-8 shown, this embodiment provides a locking and flipping switch for a cab, which includes a base assembly, a lower housing 2, an upper sheath 3, and an external wiring harness; the base assembly includes a base 4, a static contact piece 5, and a moving spring piece 6. The bottom end of the static contact piece 5 is inserted into a square hole 7 at the top of the base 4. As Figure 2 shown, one side wall of the square hole 7 is an arc side wall, and the cross-section of the square hole 7 is close to a sector; the moving spring piece 6 enters the base 4 from below the base 4 and is pressed against the bottom end of the static contact piece 5 by the elastic force of a first compression spring 8. The bottom end of the first compression spring 8 is fixed in a positioning hole of the base 4. The upper sheath 3 and the lower housing 2 are respectively sleeved on the top and bottom of the base 4, and the top and bottom of the base 4 are respectively riveted to the external wiring harness and the lower housing 2 by a special tooling fixture. Then, the upper sheath 3 is sleeved. A push rod 9 is inserted through the lower housing 2, and a second compression spring 10 is sleeved on the push rod 9. The top end of the push rod 9 passes through the first compression spring 8 and is riveted to the moving spring piece 6; the wire 14 of the external wiring harness passes through the top end face of the upper sheath 3 and is welded to the top end of the static contact piece 5.

[0034] In this embodiment, as Figures 3-4As shown, the moving reed 6 is an axially symmetric sheet-like structure in a cross shape. A through hole 6-1 for inserting the top end of the push rod 9 is provided at the center of the moving reed 6. Hemispherical contact protrusions 6-2 are respectively arranged on both side arms of the moving reed 6. The two contact protrusions 6-2 are preferably symmetrically arranged and are respectively used to contact the bottom end of a static contact piece 5. Among them, the moving reed 6 is preferably a structure with a silver-plated surface.

[0035] In this embodiment, as Figure 5 shown, the static contact piece 5 is preferably an L-shaped metal contact piece; the static contact piece 5 is fixed in the square hole 7 by riveting and is sealed by pouring resin 1 to fill the pores in the square hole 7. Among them, the static contact piece 5 is preferably a structure with a silver-plated surface.

[0036] In this embodiment, as Figure 2 shown, the base 4 is a cylindrical base. A first shoulder 12 is arranged in the middle of the outside of the cylindrical base. The lower housing 2 and the upper sheath 3 are respectively butted against the lower end face and the upper end face of the first shoulder 12, so as to wrap the base assembly inside, and a sealing ring 13 is arranged between the lower housing 2 and the first shoulder 12. The structure of the sealing ring 13 is as Figure 8 shown, and its setting is beneficial to improving the sealing performance between the lower housing 2 and the first shoulder 12, preventing water and dust.

[0037] In this embodiment, as Figures 1-2 shown, the external wiring harness includes a wire 14, a corrugated pipe 15 sleeved outside the wire 14, and a wire harness sheath 16. A connection pin is arranged inside the wire harness sheath 16. One end of the wire 14 extends into the wire harness sheath 16 and is connected to the connection pin. The other end of the wire 14 is used to be welded to the top end of the static contact piece 5, and a solder 18 is arranged at the welding position of the wire 14 and the static contact piece 5. As Figure 1 shown, more than 2 wire clips 17 are sleeved at intervals outside the corrugated pipe 15, and the wire clips 17 can be used to connect the external wiring harness to the vehicle body.

[0038] In this embodiment, as Figure 2 shown, two static contact pieces 5 are symmetrically arranged and are arranged with their corners opposite to each other; a wire 14 is respectively welded on each static contact piece 5, and each wire 14 is respectively connected to a connection pin; a tape 19 is sleeved outside the two wires 14, and the tape 19 is located between the upper sheath 3 and the corrugated pipe 15, and the tape 19 is used to gather and fix the two wires 14.

[0039] In this embodiment, as Figure 2 and 7 shown, a wire tube 3-1 for a single wire 14 to pass through is arranged at the top of the upper sheath 3. In this embodiment, two wire tubes 3-1 are arranged on one side of the top end face of the upper sheath 3 for two wires 14 to pass through.

[0040] In this embodiment, asFigures 1-2 As shown, a funnel-shaped wire sheath 20 is sleeved outside the wire 14. The funnel-shaped wire sheath 20 is located between the corrugated pipe 15 and the wire harness sheath 16, and the large end of the funnel-shaped wire sheath 20 is arranged close to the corrugated pipe 15. Among them, the funnel-shaped wire sheath 20 can make the overall structure of the external wire harness more firm.

[0041] In this embodiment, as Figure 2 shown, a second shoulder 21 is arranged on the push rod 9. The top surface of the second shoulder 21 abuts against the bottom end of the lower housing 2, that is, only the part of the push rod 9 above the second shoulder 21 is located inside the lower housing 2. A washer 22 is sleeved on the push rod 9 above the second shoulder 21. After the lower housing 2 is docked with the base 4, the washer 22 is clamped between the bottom end surface of the base 4 and the inner bottom end surface of the lower housing 2; a push rod sheath 23 is sleeved outside the push rod 9 below the second shoulder 21. As Figure 2 shown, a stepped shaft is arranged at the lower part of the lower housing 2, and an external thread is arranged on the outer side wall of the stepped shaft. The push rod sheath 23 can be threadedly connected with the stepped shaft of the lower housing 2, so as to fix the push rod 9 between the push rod sheath 23 and the lower housing 2. Among them, the push rod sheath 23 is of a hollow stepped shaft structure. The bottom end of the push rod 9 extends out of the bottom end of the push rod sheath 23 and is used to connect with the controller of the vehicle body. The controller can apply an external force to the push rod 9; when the external force presses or withdraws the bottom end of the push rod 9, the compression or tension state of the first compression spring 8 and the second compression spring 10 can be changed, thereby driving the bottom end of the moving contact piece 6 and the static contact piece 5 to disconnect or close. When the moving contact piece 6 contacts and closes with the static contact piece 5, the body relay can be closed, the flip drive device is powered on, and the flip locking flip mechanism is controlled. Under normal use conditions, the moving contact piece 6 and the static contact piece 5 are always in a disconnected state. The above-mentioned cab locking and flipping switch is mainly applicable to the main devices for the locking or flipping function of the cab of commercial vehicles.

[0042] The following is a specific installation and use description of this embodiment.

[0043] During installation, first place the first compression spring 8 from the bottom of the base 4 into the center position of the base 4, and place the moving contact piece 6 on top of the first compression spring 8. Then insert a static contact piece 5 into each of the two square holes 7, and rivet them on a special tooling fixture to form a base assembly. After placing the upper part of the push rod 9 into the central hole of the lower housing 2, slip the second compression spring 12 onto the upper part of the push rod 9. Then place the washer 22 into the lower housing 2, and then set the through hole 6-1 of the moving contact piece 6 on the base assembly over the top of the push rod 9. At the same time, perform a closing riveting on the base assembly and the parts already placed in the lower housing 2 on a special tooling fixture. Then assemble the wire harness sheath 16, the wire 14, the funnel-shaped wire sheath 20, the corrugated pipe 15, the wire clip 17, and the upper sheath 3 into an external integrated wire harness. Then weld the two wires 14 to the two static contact pieces 5 respectively, and then pour resin 1 for sealing. Finally, slip on the push rod sheath 23, and place the upper sheath 3 over the upper part of the base 4 to form a complete switch structure. The protection level of this switch structure is IP65, with stable performance and high cost performance.

[0044] Thus, it can be seen that the locking and flipping switch for a cab provided by the present invention has a simple and reasonable structure and low manufacturing cost. It can be connected to devices such as a body controller and a switch driving device to form a cab flipping control system, achieving the purpose of cab flipping or alarming. The performance of automatic flipping is reliable, and it is applicable to commercial vehicles and trucks. At the same time, by covering the base assembly with the lower housing and the upper sheath, it not only has the effects of dust and water protection and extended service life, but also can improve the protection level of the switch and the quality of switch use. In addition, the components are connected by welding, riveting or resin pouring, which helps to improve the protection level of the switch and is beneficial to improving the operational reliability of the overall structure of the switch.

[0045] It should be noted that for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0046] Specific examples are used in the present invention to elaborate on the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. At the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A locking and flipping switch for a cab, characterized in that: it includes a base assembly, a lower housing, an upper sheath and an external wiring harness; the base assembly includes a base, a static contact piece, a moving spring piece and a first compression spring, the base is a cylindrical base, and a first shoulder is arranged in a circle on the outside of the cylindrical base. The lower housing and the upper sheath are respectively butted against the lower end surface and the upper end surface of the first shoulder, and a sealing ring is arranged between the lower housing and the first shoulder; the bottom end of the static contact piece is inserted into a square hole at the top of the base, and the moving spring piece is pressed against the bottom end of the static contact piece through the first compression spring. The bottom end of the first compression spring is fixed in the base. The top of the base is butted against the upper sheath, and the bottom of the base is riveted to the lower housing. A push rod is arranged in the lower housing, and a second compression spring is sleeved on the push rod. The top end of the push rod passes through the first compression spring and is riveted to the moving spring piece; the wire of the external wiring harness penetrates through the top end surface of the upper sheath and is welded to the top end of the static contact piece. Among them, the external wiring harness includes a wire, a corrugated pipe sleeved on the outside of the wire and a wire harness sheath. A wiring pin is arranged in the wire harness sheath. One end of the wire extends into the wire harness sheath and is connected to the wiring pin, and the other end of the wire is welded to the static contact piece. There is solder at the welding place of the wire and the static contact piece. A wire clip is sleeved on the outside of the corrugated pipe; a funnel-shaped wire sheath is sleeved on the outside of the wire. The funnel-shaped wire sheath is located between the corrugated pipe and the wire harness sheath, and the large end of the funnel-shaped wire sheath is close to the corrugated pipe; a second shoulder is arranged on the push rod, the top end surface of the second shoulder abuts against the bottom end of the lower housing, a washer is sleeved on the push rod above the second shoulder, and a push rod sheath is sleeved on the outside of the push rod below the second shoulder. The push rod sheath is threadedly connected to the bottom end of the lower housing.

2. The locking and flipping switch for a cab according to claim 1, characterized in that: the moving spring piece is an axisymmetric sheet structure, a through hole connected to the push rod is opened in the center of the moving spring piece, and a contact protrusion is arranged on each side of the moving spring piece.

3. The locking and flipping switch for a cab according to claim 1, characterized in that: the static contact piece is an L-shaped metal contact piece; the static contact piece is fixed in the square hole by riveting and is sealed by pouring resin.

4. The locking and flipping switch for a cab according to claim 1, characterized in that: two static contact pieces are symmetrically arranged, one wire is welded to each static contact piece, and each wire is connected to one wiring pin; a tape is sleeved on the outside of the two wires, and the tape is located between the upper sheath and the corrugated pipe.

5. The locking and flipping switch for a cab according to claim 1, characterized in that: a wire tube for a single wire to pass through is arranged at the top of the upper sheath.

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