Microswitch and vehicle handle

Abstract

The utility model provides a microswitch and a vehicle handle, which belong to the technical field of vehicle parts, and are characterized in that a first contact and a second contact which are arranged at an interval are arranged in a shell; the action reed is provided with a first fulcrum part and a contact part, the first fulcrum part is fixedly connected with the shell, and the contact part is located between the first contact and the second contact; the supporting rod is provided with a second fulcrum part and a stress part, and the second fulcrum part is fixedly connected with the shell; one end of the tension spring is connected with the stress part, and the other end is connected with the contact part; when the stress part is located in the first interval, the component force generated by the tension of the tension spring on the contact part faces the first contact; and when the stress part is located in the second interval, the component force generated by the tension of the tension spring on the contact part faces the second contact. The beneficial effects of the utility model are that the microswitch in the vehicle door handle is provided, and the microswitch is simple and ingenious in structure, high in trigger precision and fast in response speed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vehicle parts technical field relates to a microswitch and the handle for vehicle. BACKGROUND

[0002] With the rapid development of automobile intelligentization and electrification technology, the function of traditional mechanical type vehicle door control system has gradually upgraded to the direction of electronization and integration. In the field of door control, microswitch as a key sensing element is widely used in vehicle door handle design, bearing the core signal triggering functions of door opening and closing control, safety interaction and stroke limiting.

[0003] Microswitch needs to accurately realize contact point on-off when the user operates the door handle (such as pulling, pressing). If the contact point position deviation exceeds the allowed range, it is easy to cause false triggering (false signal when not operating) or missing triggering (no response after operation). In addition, the trigger precision and response speed of the microswitch of the door handle are higher - the contact point needs to be quickly closed and separated within milliseconds, so as to ensure the real-time and reliability of signal transmission.

[0004] At present, the conventional microswitch is difficult to fully meet the above technical requirements due to insufficient contact point positioning accuracy and slow response speed. Although some specially designed microswitches (such as redundant contact type and high sealing type) can adapt to the harsh working conditions of the door handle, the complex internal structure significantly increases the manufacturing cost, which restricts its large-scale application. Therefore, how to optimize the structure design and reduce the production cost under the premise of ensuring the performance has become a technical bottleneck to be broken through in this field. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above problems existing in prior art, and provides a microswitch and a handle for vehicle.

[0006] The utility model can be realized by the following technical scheme: a microswitch, comprising:

[0007] A shell is provided with a first contact point and a second contact point arranged at intervals in the shell;

[0008] An action spring piece is installed in the shell, the action spring piece has a first fulcrum part and a contact point part, the first fulcrum part is fixedly connected with the shell, the contact point part is located between the first contact point and the second contact point, and the contact point part is arranged to be able to swing around the first fulcrum part;

[0009] A support rod is installed in the shell, the support rod has a second fulcrum part and a stress part, the second fulcrum part is fixedly connected with the shell, and the stress part is arranged to be able to swing around the second fulcrum part;

[0010] a tension spring, one end of which is connected to the force receiving part and the other end of which is connected to the contact part;

[0011] The stroke position of the force receiving part includes a normal position, a balance position, and an action position, a first interval is formed between the normal position and the balance position, and a second interval is formed between the balance position and the action position.

[0012] When the force receiving part is located in the first interval, the component force of the pulling force of the tension spring on the contact part is directed towards the first contact, and the contact part abuts against the first contact.

[0013] When the force receiving part is located in the second interval, the component force of the pulling force of the tension spring on the contact part is directed towards the second contact, and the contact part abuts against the second contact.

[0014] Preferably, a pressing block is further included, which is press-fittingly installed on the housing, the top of the pressing block protrudes from the surface of the housing, the pressing block is in contact with the force receiving part, and the stroke position of the pressing block determines the stroke position of the force receiving part.

[0015] Preferably, when the force receiving part is not in the normal position, the support rod is deformed to store energy and generate a restoring force to make the force receiving part tend to the normal position.

[0016] Preferably, the balance position is set as the position of the force receiving part when the axis of the tension spring is collinear with the line connecting the first fulcrum part and the contact part.

[0017] Preferably, when the force receiving part crosses the balance position, the direction of the force of the tension spring on the contact part is stepwise reversed.

[0018] Preferably, when the force receiving part is in the balance position, the plane in which the action spring sheet is located is a reference plane, and the first interval and the second interval are respectively located on the two sides of the reference plane.

[0019] Preferably, the first fulcrum part and the contact part are respectively located at the two ends of the action spring sheet, and the second fulcrum part and the force receiving part are respectively located at the two ends of the support rod.

[0020] Preferably, the part of the pressing block protruding from the housing is provided as a convex structure with a continuous and smooth transition.

[0021] A handle for a vehicle, comprising the micro switch, and further comprising a handle base, the housing of the micro switch being fixedly installed on the handle base.

[0022] Preferably, the microswitch further comprises a handle member rotatably connected with the handle base, and when the handle member is rotated to an open position, the pressing block pushes the force receiving part to the action position.

[0023] Compared with the prior art, the microswitch has the following beneficial effects:

[0024] 1. When the force receiving part is in the first interval or the second interval, it means that the force component F>0 generated by the pulling force of the contact part. When the force receiving part crosses the balance position, the direction of the force component generated by the pulling force of the contact part will be quickly reversed, thereby achieving the effect of fast response, and the triggering precision is extremely high.

[0025] 2. When the external operating member extrudes the pressing block, the pressing block will exert an external force on the force receiving part of the supporting rod, thereby changing the position of the force receiving part. Since the stroke position of the pressing block directly affects the position of the force receiving part, the specific position of the force receiving part in the first interval, the balance position and the second interval can be accurately adjusted by controlling the pressing depth of the pressing block.

[0026] 3. When the external force makes the force receiving part cross from the first interval to the second interval, or vice versa, the balance position is needed. In this process, due to the change of the pulling force direction, the contact part will quickly switch from the state of contacting one contact to the state of contacting another contact, realizing the fast on-off of the circuit. By setting a clear balance position, accurate control of the operation of the microswitch can be realized. This makes the switch can quickly and accurately switch between different working states. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is an internal structure diagram of the microswitch of the utility model.

[0028] Figure 2 It is a structure diagram of the action spring sheet and the supporting rod of the utility model.

[0029] Figure 3 It is an exploded view of the structure of the microswitch of the utility model.

[0030] Figure 4 It is a connection relationship diagram of the action spring sheet, the supporting rod and the tension spring of the utility model.

[0031] Figure 5 It is a force diagram when the force receiving part of the utility model is in the normal position.

[0032] Figure 6 It is a force diagram when the force receiving part of the utility model is in the balance position.

[0033] Figure 7 It is a force diagram when the force receiving part of the utility model is in the action position.

[0034] Figure 8 It is a schematic view of the handle for vehicle of the utility model.

[0035] Figure 9 It is a schematic view of another view angle of the handle for vehicle of the utility model.

[0036] In the figure, 100, shell;110, first contact;120, second contact;200, action spring leaf;210, first fulcrum part;220, contact part;300, support rod;310, second fulcrum part;320, stress part;400, pull spring;500, pressing block;600, handle base;610, handle piece. DETAILED DESCRIPTION

[0037] The following is the specific embodiment of the utility model and is combined with the drawings, and the technical scheme of the utility model is further described, but the utility model is not limited to these embodiments.

[0038] As Figures 1 to 7 Indicated, a micro switch, comprising: shell 100, the first contact 110 and the second contact 120 are arranged in the shell 100 at intervals;Action spring leaf 200, action spring leaf 200 is installed in the shell 100, action spring leaf 200 has first fulcrum part 210 and contact part 220, first fulcrum part 210 is fixedly connected with the shell 100, contact part 220 is located between the first contact 110 and the second contact 120, and contact part 220 is arranged to be able to swing around first fulcrum part 210;Support rod 300, support rod 300 is installed in the shell 100, support rod 300 has second fulcrum part 310 and stress part 320, second fulcrum part 310 is fixedly connected with the shell 100, stress part 320 is arranged to be able to swing around second fulcrum part 310;Pull spring 400, one end of pull spring 400 is connected with stress part 320 and the other end is connected with contact part 220;The travel position of stress part 320 includes normal position, equilibrium position and action position, the first interval is formed between normal position and equilibrium position, and the second interval is formed between equilibrium position and action position;When stress part 320 is located in the first interval, the component force of the pulling force of pull spring 400 to contact part 220 is towards the first contact 110, and contact part 220 is in abutment with the first contact 110;When stress part 320 is located in the second interval, the component force of the pulling force of pull spring 400 to contact part 220 is towards the second contact 120, and contact part 220 is in abutment with the second contact 120.

[0039] The shell 100 is the basic structure of the whole micro switch, which can be subdivided into a glue shell, a wire shell, a needle seat and a PCB board. The action spring 200 and the support rod 300 are both hinged to the needle seat. The first contact 110 and the second contact 120 are arranged on the needle seat and are the key points of the circuit connection. The first contact 110 is the contact of the normally closed circuit, and the second contact 120 is the contact of the normally open circuit. The action spring 200 is a key component, which has a first fulcrum part 210 and a contact part 220. The first fulcrum part 210 is fixed on the shell 100, and the contact part 220 is located between the two contacts and can swing around the first fulcrum part 210. This design allows the contact part 220 to contact the first or second contact 120 as needed.

[0040] The role of the tension spring 400 is to provide the necessary force to enable the contact part 220 to switch between different positions. The role of the support rod 300 is to change the direction of the tension force applied to the contact part 220 by moving the force receiving part 320. By changing the angle between the tension force direction and the line connecting the first fulcrum part 210 and the contact part 220, the direction of the component force of the tension force is changed, so that the contact part 220 is in contact with the first contact 110 / second contact 120. The force receiving part 320 has three important positions: a normal position, a balance position and an action position. These three positions define two intervals: a first interval (between the normal position and the balance position) and a second interval (between the balance position and the action position).

[0041] As shown in Figures 3 to 7 , the contact part 220 is point A, the first fulcrum part 210 is point B, and the force receiving part 320 is point C. The component force of the contact part 220 towards the first contact 110 or the second contact 120 is F.

[0042] From the principle of the present scheme, when the force receiving part 320 is in the first interval or the second interval, the point C is not on the straight line AB; when the force receiving part 320 is in the balance position, the point C is on the straight line AB. Assuming that the direction of the tension force of the tension spring 400 (i.e. the straight line AC) is collinear with the straight line AB, i.e. the force receiving part 320 is in the balance position, which means that the component force F of the tension force received by the contact part 220 is 0. Assuming that the direction of the tension force of the tension spring 400 (i.e. the straight line AC) has an angle with the straight line AB, i.e. the force receiving part 320 is in the first interval or the second interval, which means that the component force F of the tension force received by the contact part 220 is greater than 0. When the force receiving part 320 crosses the balance position, the direction of the component force of the tension force received by the contact part 220 will be quickly reversed, thereby achieving a fast response effect and a high triggering accuracy.

[0043] Furthermore, when the force-receiving part 320 is in the first interval, the tension spring 400 applies a tension force inclined to the straight line AB to the contact part 220. This tension force can be decomposed into a first component force along the straight line AB and a second component force toward the first contact point 110. That is, the contact part 220 is subjected to a force toward the first contact point 110, causing the contact part 220 to abut against the first contact point 110. Similarly, when the force-receiving part 320 is in the second interval, the contact part 220 is subjected to a force toward the second contact point 120, causing the contact part 220 to abut against the second contact point 120.

[0044] The design of the tension spring 400 and the support rod 300 enables the contact portion 220 to switch at precise positions. When the force-bearing portion 320 crosses the equilibrium position, the rapid change in the direction of the tension causes the direction of the component force on the contact portion 220 to also quickly reverse, achieving fast response and high triggering accuracy. The overall switch design is relatively simple, easy to manufacture and maintain. The interaction between components is direct and effective, helping to reduce production costs and improve product consistency.

[0045] like Figures 1 to 7 As shown, based on the above embodiment, a pressing block 500 is also included. The pressing block 500 is pressably installed on the housing 100. The top of the pressing block 500 protrudes from the surface of the housing 100. The pressing block 500 is in contact with the force-receiving part 320. The stroke position of the pressing block 500 determines the stroke position of the force-receiving part 320.

[0046] The pressing block 500 can be pressed and installed on the housing 100, and its top protrudes from the surface of the housing 100 to facilitate triggering by other mechanisms. The pressing block 500 is in direct contact with the force-bearing part 320 of the support rod 300, and the position of the force-bearing part 320 is changed by physical pressing.

[0047] When the external operating component presses the pressing block 500, the pressing block 500 applies an external force to the force-receiving part 320 of the support rod 300, thereby changing the position of the force-receiving part 320. Since the stroke position of the pressing block 500 directly affects the position of the force-receiving part 320, the specific position of the force-receiving part 320 in the first interval, the equilibrium position, and the second interval can be precisely adjusted by controlling the pressing depth of the pressing block 500.

[0048] As the pressing block 500 is gradually pressed down, the force-receiving part 320 will move from the normal position through the equilibrium position and finally reach the operating position. During this process, the direction of the tension force of the tension spring 400 on the contact part 220 changes, causing the contact part 220 to disengage from the first contact 110 until it makes contact with the second contact 120.

[0049] Based on the above implementation, when the force-bearing part 320 is in an abnormal position, the support rod 300 deforms and stores force, and generates a restoring force that causes the force-bearing part 320 to tend towards the normal position.

[0050] When the pressing block 500 is pressed, it pushes the force-receiving part 320 away from its normal position, sequentially entering the first and second intervals. During this process, the support rod 300 deforms due to the external force. Once the external force applied to the pressing block 500 decreases or is removed, the support rod 300, due to its physical properties, will attempt to return to its undeformed state. This tendency to "spring back" creates a restoring force that acts on the force-receiving part 320, causing it to move towards its normal position.

[0051] like Figures 1 to 7 As shown, based on the above embodiment, the balance position is set to the position of the force-bearing part 320 when the axis of the tension spring 400 is collinear with the line connecting the first fulcrum part 210 and the contact part 220.

[0052] The equilibrium position is a crucial travel position, playing a vital transitional role. When the force-bearing part 320 is in the equilibrium position, i.e., when A, B, and C are aligned in a straight line, the force F acting on the contact part 220 towards any contact point is zero. By setting a specific equilibrium position, precise control of the microswitch operation can be achieved. This allows the switch to switch quickly and accurately between different operating states.

[0053] When an external force causes the force-bearing part 320 to move from the first interval to the second interval, or vice versa, it needs to pass through the equilibrium position. During this process, due to the change in the direction of the pulling force, the contact part 220 will quickly switch from being in contact with one contact to being in contact with another contact, thereby realizing the rapid switching on and off of the circuit.

[0054] Based on the above implementation, when the force-bearing part 320 crosses the equilibrium position, the direction of the force exerted by the tension spring 400 on the contact part 220 is reversed in a step-like manner.

[0055] This step-reversal mechanism ensures that when the force-bearing part 320 crosses the equilibrium position, the contact part 220 can quickly switch from contacting one contact to contacting another, realizing rapid circuit switching. Since the change in the direction of the force of the tension spring 400 occurs instantaneously and depends on the exact position of the force-bearing part 320, it provides extremely high triggering accuracy and reduces the possibility of misoperation.

[0056] Based on the above implementation, when the force-receiving part 320 is in the equilibrium position, the plane where the actuating spring 200 is located is the reference plane; the first interval and the second interval are located on both sides of the reference plane.

[0057] When the force-receiving part 320 is in the equilibrium position, the plane containing the actuating spring 200 is defined as the reference plane. When the force-receiving part 320 is in the first interval, it is on one side relative to the reference plane. In this case, the axis of the tension spring 400 is no longer collinear with the line connecting the first fulcrum part 210 and the contact part 220, but forms an angle. This angle causes the tension force applied by the tension spring 400 to the contact part 220 to be decomposed into two components: one along the direction of the line connecting the first fulcrum part 210 and the contact part 220, and the other perpendicular to this direction pointing towards the first contact 110. Therefore, in the first interval, the contact part 220 is subjected to a force toward the first contact 110, causing the contact part 220 to contact the first contact 110. When the force-receiving part 320 is in the second interval, it is on the other side relative to the reference plane. Similarly, there is an angle between the axis of the tension spring 400 and the line connecting the first fulcrum portion 210 and the contact portion 220. However, unlike the first interval, this angle causes a step reversal in the direction of the tension force applied by the tension spring 400 to the contact portion 220, so that its component force now points towards the second contact 120. Therefore, in the second interval, the contact portion 220 is subjected to a force toward the second contact 120, causing it to contact the second contact 120.

[0058] By setting the first and second intervals on opposite sides of the reference plane, this design ensures that when an external force causes the force-bearing part 320 to move from one side to the other, the direction of the force exerted by the tension spring 400 on the contact part 220 will change significantly, thereby enabling rapid switching of the circuit state.

[0059] like Figures 1 to 4 As shown, based on the above embodiment, the first fulcrum portion 210 and the contact portion 220 are located at both ends of the actuating spring 200, and the second fulcrum portion 310 and the force-receiving portion 320 are located at both ends of the support rod 300.

[0060] Based on the above embodiments, the portion of the pressing block 500 protruding from the housing 100 is configured as a continuously smooth transition protrusion structure.

[0061] The smooth transition design allows the external operating component to push or squeeze the pressing block 500 when it moves, thus converting the thrust of the external operating component into the pressing force of the pressing block 500.

[0062] like Figures 1 to 9 As shown, based on the above embodiments, a vehicle handle includes: a micro switch, and a handle base 600, wherein the housing 100 of the micro switch is fixedly installed on the handle base 600.

[0063] On the basis of the above-mentioned embodiments, the handle piece 610 is further included, the handle piece 610 is rotatably connected with the handle base 600, when the handle piece 610 rotates to the opening position, the pressing block 500 pushes the stress part 320 to move to the action position.

[0064] The shell 100 of the micro switch is fixedly installed on the handle base 600, the position of the shell 100 is ensured to be stable, the handle base 600 is the basic structure of the whole device, and the handle base 600 can be installed on the inner side of the vehicle door. The handle piece 610 is a component rotatable relative to the handle base 600, and allows a user to open the vehicle door by rotating the handle piece 610. The pressing block 500 is a key component connecting the handle piece 610 and the micro switch, the top of the pressing block 500 protrudes from the surface of the shell 100, and the pressing block 500 is convenient to contact with the handle piece 610, when the handle piece 610 rotates to the opening position, the handle piece 610 will press the stress part 320 of the micro switch through the pressing block 500, so that the position of the stress part 320 is changed.

[0065] In actual work, when a passenger pulls or rotates the handle piece 610 to try to open the vehicle door, the handle piece 610 begins to rotate around the connecting point of the handle piece 610 and the handle base 600, and as the handle piece 610 rotates to a specific opening position, the handle piece 610 will contact and press the pressing block 500. Since the pressing block 500 is directly connected with the stress part 320 of the micro switch, once the stress part 320 moves to the action position, the handle piece 610 will cause the direction of the force of the tension spring 400 on the contact part 220 to be reversed in steps, so that the contact part 220 is separated from the first contact 110 and contacts the second contact 120, and the switching of the circuit state is completed. This action can be used to send a signal to the control system of the vehicle, for example, to unlock the vehicle door or activate other safety functions.

[0066] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0067] In addition, in the present application, the description such as "first", "second", "one" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0068] In the utility model, unless another definite provision and limitation, the term "connect", "fix" and so on should do the broad sense understanding, for example, "fix" can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation.For the ordinary skill in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0069] In addition, the technical solutions of various embodiments of the present application can be combined with each other, but must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

Claims

1. A microswitch, characterised in that, The utility model relates to a kind of switch, including: Shell (100), first contact (110) and second contact (120) are arranged in the shell (100) at interval; Action spring (200), the action spring (200) is installed in the shell (100), the action spring (200) has first fulcrum part (210) and contact point part (220), the first fulcrum part (210) is fixedly connected with the shell (100), the contact point part (220) is between the first contact (110) and the second contact (120), and the contact point part (220) is arranged to be able to oscillate around the first fulcrum part (210); Supporting rod (300), the supporting rod (300) is installed in the shell (100), the supporting rod (300) has second fulcrum part (310) and force receiving part (320), the second fulcrum part (310) is fixedly connected with the shell (100), the force receiving part (320) is arranged to be able to oscillate around the second fulcrum part (310); Tension spring (400), one end of the tension spring (400) is connected with the force receiving part (320) and the other end is connected with the contact point part (220); The stroke position of the force receiving part (320) includes normal position, balance position and action position, first interval is formed between the normal position and the balance position, second interval is formed between the balance position and the action position; When the force receiving part (320) is located in the first interval, the component force of the tension spring (400) on the contact point part (220) is directed to the first contact (110), and the contact point part (220) is in abutment with the first contact (110); When the force receiving part (320) is located in the second interval, the component force of the tension spring (400) on the contact point part (220) is directed to the second contact (120), and the contact point part (220) is in abutment with the second contact (120).

2. A microswitch according to claim 1, wherein: Further comprising pressing block (500), the pressing block (500) is pressably installed in the shell (100), the top of the pressing block (500) protrudes from the surface of the shell (100), the pressing block (500) is in abutment with the force receiving part (320), and the stroke position of the pressing block (500) determines the stroke position of the force receiving part (320).

3. A microswitch according to claim 1, wherein: When the force receiving part (320) is not in the normal position, the supporting rod (300) is deformed to store force and generates a restoring force to make the force receiving part (320) tend to the normal position.

4. A microswitch according to claim 1, wherein: The balance position is arranged to be the position of the force receiving part (320) when the axis of the tension spring (400) is collinear with the line connecting the first fulcrum part (210) and the contact point part (220).

5. A microswitch according to claim 4, wherein: When the force receiving part (320) crosses the balance position, the direction of the force of the tension spring (400) on the contact point part (220) is stepwise reversed.

6. A microswitch according to claim 1 or 4 wherein: The plane where the action spring (200) is located is the reference plane when the force receiving part (320) is in the balanced position; the first interval and the second interval are respectively located on two sides of the reference plane.

7. A microswitch according to claim 1, wherein: The first fulcrum part (210) and the contact part (220) are respectively located on two ends of the action spring (200), and the second fulcrum part (310) and the force receiving part (320) are respectively located on two ends of the support rod (300).

8. A microswitch according to claim 2, wherein: The part of the pressing block (500) protruding from the shell (100) is provided as a continuously smooth transition convex structure.

9. A handle for a vehicle, characterized in that Comprise: The micro switch according to any one of claims 1 to 8, further comprising a handle base (600), and the shell (100) of the micro switch is fixedly installed on the handle base (600).

10. A handle for a vehicle as claimed in claim 9, wherein: Further comprising a handle piece (610), the handle piece (610) is rotatably connected with the handle base (600), and when the handle piece (610) is rotated to an open position, the force receiving part (320) is pushed to move to the action position by the pressing block (500).

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