Quick-reset elastic sheet type microswitch

Abstract

The utility model discloses a fast reset elastic sheet type microswitch, comprising a main body, a switch is connected in the main body, side plates are symmetrically and integrally formed at the upper end of the main body, the outer wall of each side plate is provided with a chute and a through hole, a moving member is arranged between the side plates, the two ends of the moving member penetrate through the chute, and the two ends of the moving member penetrate through the through hole. A pressing plate is arranged at the upper end of the main body, a hinge part is connected to the left side of the pressing plate, connecting shafts are connected to the two sides of the hinge part, the hinge part extends into the through holes through the connecting shafts to be hinged to the side plates, the outer walls of the connecting shafts are sleeved with double-torsion springs, and the middles of the double-torsion springs extend to the lower end of the pressing plate to be fixedly connected with the pressing plate. According to the utility model, the problem that a user needs to press the rotating block all the time to drive the switch to move towards the inside of the shell in the use process so as to switch on the switch, so that the switch cannot be driven to move towards the inside of the shell under the condition that the rotating block is not subjected to the action of pressing force, and the switch cannot be switched on is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of micro switches, and particularly relates to a leaf spring type micro switch with quick reset. Background Art

[0002] A micro switch is a contact mechanism with a tiny contact interval and a quick-acting mechanism, which performs a switching action with a specified stroke and a specified force, is covered with a housing, and has a driving rod on the outside. Because the contact spacing of its switch is relatively small, it is called a micro switch, also known as a sensitive switch.

[0003] For example, in the Chinese patent with the application number 202220452309.4, the utility model discloses a leaf spring type micro switch, including a housing. A switch element is arranged on the right side of the front side of the inner cavity of the housing. One end of the switch element penetrates to the outside of the housing. A moving block is arranged behind the switch element. A moving contact piece is fixedly connected to the left side of the back surface of the moving block. A static contact is fixedly connected to the inner cavity of the housing. One end of the static contact penetrates to the outside of the housing. A static contact piece is fixedly connected to the right side of the front surface of the static contact. This leaf spring type micro switch has the advantages of high sensitivity and long service life. In the actual use process, through the setting of the tension spring, the switch element can be reset, so that the situation that the switch button cannot rebound due to multiple bends will not occur, the sensitivity of the micro switch is improved, the service life of the micro switch is extended, it is convenient for users to use, and the practicability of the micro switch is improved.

[0004] However, there are some problems in the prior art: during use, the user needs to continuously press the rotating block to drive the switch element to move into the housing, so as to turn on the switch. As a result, when the rotating block is not under the action of the pressing force, it cannot drive the switch element to move into the housing, and thus the switch cannot be turned on. Therefore, we propose a leaf spring type micro switch with quick reset. Content of the Utility Model

[0005] In view of the problems existing in the above-mentioned technology, the utility model provides a leaf spring type micro switch with quick reset, which solves the problem that during use, the user needs to continuously press the rotating block to drive the switch element to move into the housing, so as to turn on the switch. As a result, when the rotating block is not under the action of the pressing force, it cannot drive the switch element to move into the housing, and thus the switch cannot be turned on.

[0006] The present utility model is realized as follows. A snap-action microswitch with quick reset includes a main body. A switch unit is connected inside the main body. Side plates are integrally formed symmetrically at the upper end of the main body. A chute and a through hole are provided on the outer wall of the side plate. The through hole is located at the lower end of the chute. A moving member is provided between the side plates. Both ends of the moving member penetrate through the chute. A pressing plate is provided at the upper end of the main body. A hinged portion is connected to the left side of the pressing plate. The pressing plate is located above the switch unit. Connecting shafts are connected to both sides of the hinged portion. The hinged portion extends into the through hole through the connecting shaft and is hinged to the side plate. A double torsion spring is sleeved on the outer wall of the connecting shaft. The middle of the double torsion spring extends to the lower end of the pressing plate and is fixedly connected thereto.

[0007] Preferably, a counterweight member is connected to the side of the pressing plate away from the side plate.

[0008] Preferably, limiting sleeves are integrally formed on the outer walls of the corresponding sides of the side plates. The two limiting sleeves are fixedly connected to both ends of the double torsion spring.

[0009] Preferably, a plurality of limiting holes are provided on the upper end surface of the side plate. The limiting holes communicate with the chute.

[0010] Preferably, the moving member includes a movable plate. Both ends of the movable plate penetrate through the chute and extend to the outside of the side plate. Limiting blocks are connected to both ends of the movable plate located outside the side plate.

[0011] Preferably, a tension spring is connected to the right outer wall of the movable plate located inside the chute. The other end of the tension spring is connected to the inner wall of the chute.

[0012] Preferably, a telescopic mechanism is connected to the upper outer wall of the movable plate located inside the chute. The telescopic mechanism includes a stepped hole provided on the outer wall of the movable plate. A telescopic block is connected inside the stepped hole. One end of the telescopic block located inside the stepped hole is connected to a telescopic spring. The other end of the telescopic block extends to the outside of the stepped hole and is connected to the limiting hole.

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

[0014] 1. In the present utility model, by sliding the moving member, during the sliding process of the moving member, it contacts the obliquely upwardly arranged pressing plate. Under the action of the moving member, the pressing plate is driven to move downward, so that its hinged portion rotates between the side plates, making the pressing plate contact the switch unit, driving the switch unit to move into the main body, and thus turning on the switch.

[0015] 2. The utility model drives the movable plate to move downward, which drives the pressing plate to move downward and contact with the switch element, driving the switch element to move into the main body, thereby turning on the switch. During the movement of the movable plate, the telescopic block contacts the inner wall of the chute, and under the influence of force, drives the telescopic spring to contract into the stepped hole. When the stepped hole corresponds to the limiting hole, the telescopic spring rebounds, driving the telescopic block to extend into the limiting hole to limit it, so that the pressing plate presses the switch element for a long time and keeps the switch on for a long time;

[0016] 3. The utility model presses the telescopic block to make it extend into the stepped hole and away from the limiting hole. Without the limiting effect of the limiting hole on the telescopic block, the tension spring rebounds, driving the movable plate to start to reset. When the pressing plate does not receive the pressing force from the movable plate, the double torsion spring drives the pressing plate to reset. When the switch element loses the force of the pressing plate, it also resets, thereby turning off the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view structural schematic diagram provided by the embodiment of the utility model;

[0018] Figure 2 is the top view schematic diagram provided by the embodiment of the utility model;

[0019] Figure 3 is provided by the embodiment of the utility model Figure 2 enlarged schematic diagram of area a in;

[0020] Figure 4 is the partial sectional view schematic diagram of the movable plate provided by the embodiment of the utility model.

[0021] In the figure: 1, main body; 2, moving part; 3, pressing plate; 4, telescopic mechanism; 11, side plate; 12, switch element; 13, through hole; 21, movable plate; 22, limiting block; 31, weight; 32, connecting shaft; 33, double torsion spring; 34, hinge part; 41, telescopic block; 42, stepped hole; 43, telescopic spring; 111, chute; 112, limiting sleeve; 113, tension spring; 114, limiting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to further understand the content, features and effects of the utility model, the following embodiments are listed and described in detail with reference to the accompanying drawings.

[0023] The structure of the utility model will be described in detail below with reference to the accompanying drawings.

[0024] Embodiment 1:

[0025] As Figure 1As shown in the figure, a snap-action microswitch with quick reset provided by an embodiment of the present utility model includes a main body 1. A switch element 12 is connected inside the main body 1. The upper end of the switch element 12 penetrates through the inner wall of the main body 1 and extends to the outside. Side plates 11 are integrally formed symmetrically at the upper end of the main body 1. A chute 111 and a through hole 13 are provided on the outer wall of the side plate 11. The through hole 13 is located at the lower end of the chute 111. A moving member 2 is provided between the side plates 11. Both ends of the moving member 2 penetrate through the chute 111. A pressing plate 3 is provided at the upper end of the main body 1. The pressing plate 3 is located above the switch element 12. A hinge portion 34 is connected to the left side of the pressing plate 3. Connecting shafts 32 are connected to both sides of the hinge portion 34. The hinge portion 34 extends into the through hole 13 through the connecting shaft 32 and is hinged to the side plate 11. A double torsion spring 33 is sleeved on the outer wall of the connecting shaft 32. The middle part of the double torsion spring 33 extends to the lower end of the pressing plate 3 and is fixedly connected thereto. By sliding the moving member 2, during the sliding process of the moving member 2, it contacts the obliquely arranged pressing plate 3 above. Under the action of the moving member 2, the pressing plate 3 is driven to move downward, so that the hinge portion 34 rotates between the side plates 11, making the pressing plate 3 contact the switch element 12, driving the switch element 12 to move into the main body 1, and turning on the switch.

[0026] As Figures 2 to 4As shown in the figure, a counterweight 31 is connected to the side of the pressing plate 3 away from the side plate 11; on the outer walls of the corresponding sides of the side plates 11, limiting sleeves 112 are integrally formed, and the two limiting sleeves 112 are fixedly connected to both ends of a double torsion spring 33; on the upper end surface of the side plate 11, a plurality of limiting holes 114 are provided, and the limiting holes 114 communicate with the sliding grooves 111; the moving member 2 includes a movable plate 21, both ends of the movable plate 21 penetrate through the sliding grooves 111 and extend to the outside of the side plate 11, and limiting blocks 22 are connected to both ends of the movable plate 21 located outside the side plate 11; on the right outer wall of the movable plate 21 located inside the sliding groove 111, a tension spring 113 is connected, and the other end of the tension spring 113 is connected to the inner wall of the sliding groove 111; on the upper outer wall of the movable plate 21 located inside the sliding groove 111, a telescopic mechanism 4 is connected, the telescopic mechanism 4 includes a stepped hole 42 provided on the outer wall of the movable plate 21, a telescopic block 41 is connected inside the stepped hole 42, a telescopic spring 43 is connected to one end of the telescopic block 41 located inside the stepped hole 42, and the other end of the telescopic block 41 extends outside the stepped hole 42 and is connected to the limiting hole 114; by pushing the movable plate 21, the pressing plate 3 is driven to move downward to contact the switch element 12, and the switch element 12 is driven to move into the main body 1, so as to turn on the switch. During the movement of the movable plate 21, the telescopic block 41 contacts the inner wall of the sliding groove 111, and under the influence of the force, the telescopic spring 43 is driven to contract into the stepped hole 42. When the stepped hole 42 corresponds to the limiting hole 114, the telescopic spring 43 rebounds, driving the telescopic block 41 to extend into the limiting hole 114 to limit it, so that the pressing plate 3 presses the switch element 12 for a long time and keeps the switch on for a long time; and by pressing the telescopic block 41, the telescopic block 41 extends into the stepped hole 42 and is away from the limiting hole 114. Without the limiting effect of the limiting hole 114 on the telescopic block 41, the tension spring rebounds, driving the movable plate 21 to start to reset. When the pressing plate 3 does not receive the pressing force of the movable plate 21, the double torsion spring 33 drives the pressing plate 3 to reset. When the switch element 12 loses the force of the pressing plate 3, it also resets, thereby disconnecting the switch.

[0027] Working principle of Embodiment 1:

[0028] During use, the movable plate 21 is pushed, causing it to drive the pressing plate 3 to move downward and contact the switch element 12, driving the switch element 12 to move into the main body 1, thereby closing the switch. During the movement of the movable plate 21, its telescopic block 41 contacts the inner wall of the sliding groove 111, and under the influence of the force, drives the telescopic spring 43 to contract into the stepped hole 42. When the stepped hole 42 corresponds to the limiting hole 114, the telescopic spring 43 rebounds, driving the telescopic block 41 to extend into the limiting hole 114 to limit it, so that the pressing plate 3 presses the switch element 12 for a long time, keeping the switch closed for a long time. And by pressing the telescopic block 41, the telescopic block 41 extends into the stepped hole 42 and away from the limiting hole 114. Without the limiting effect of the limiting hole 114 on the telescopic block 41, the tension spring rebounds, driving the movable plate 21 to start resetting. When the pressing plate 3 is not subjected to the pressing force of the movable plate 21, the double torsion spring 33 drives the pressing plate 3 to reset. When the switch element 12 loses the force of the pressing plate 3, it also resets, thereby opening the switch.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick-reset spring-type micro switch, comprising a main body (1), characterized in that: A switch (12) is connected to the inside of the main body (1), and the upper end of the switch (12) penetrates the inner wall of the main body (1) and extends to the outside. A side plate (11) is symmetrically formed on the upper end of the main body (1), and the outer wall of the side plate (11) is provided with a slide groove (111) and a through hole (13), and the through hole (13) is located at the lower end of the slide groove (111). A moving part (2) is provided between the side plates (11), and both ends of the moving part (2) penetrate the slide groove (111). The main body (1) A pressing plate (3) is provided at the upper end, the pressing plate (3) being located at the upper end of the switch (12); a hinged portion (34) is connected to the left side of the pressing plate (3); connecting shafts (32) are connected to the two sides of the hinged portion (34); the hinged portion (34) extends into the through hole (13) through the connecting shaft (32) and is hingedly connected to the side plate (11); a double torsion spring (33) is sleeved on the outer wall of the connecting shaft (32); the middle part of the double torsion spring (33) extends to the lower end of the pressing plate (3) and is fixedly connected to the pressing plate (3).

2. A quick-reset spring-type micro switch according to claim 1, characterized in that: A counterweight (31) is connected to the side of the pressing plate (3) away from the side plate (11).

3. A quick-reset spring-type micro switch according to claim 1, characterized in that: The outer wall on one side corresponding to the side plate (11) is integrally formed with a limiting sleeve (112), and the two limiting sleeves (112) are fixedly connected to both ends of the double torsion spring (33).

4. A quick-reset spring-type micro switch according to claim 1, characterized in that: The upper end surface of the side plate (11) is provided with a plurality of limiting holes (114), and the limiting holes (114) are in communication with the slide groove (111).

5. A fast-reset spring-type micro switch as claimed in claim 4, characterized in that: The movable member (2) comprises a movable plate (21), both ends of the movable plate (21) pass through the slide groove (111) and extend to the outside of the side plate (11), and both ends of the movable plate (21) located outside the side plate (11) are connected to the limiting blocks (22).

6. A fast-reset spring-type micro switch as claimed in claim 5, characterized in that: A tension spring (113) is connected to the right outer wall of the movable plate (21) located inside the slide groove (111), and the other end of the tension spring (113) is connected to the inner wall of the slide groove (111).

7. A fast-reset spring-type micro switch according to claim 6, characterized in that: The upper outer wall of the movable plate (21) located inside the slide groove (111) is connected to a telescopic mechanism (4), the telescopic mechanism (4) comprises a step hole (42) arranged on the outer wall of the movable plate (21), a telescopic block (41) is connected inside the step hole (42), one end of the telescopic block (41) located inside the step hole (42) is connected to a telescopic spring (43), and the other end of the telescopic block (41) extends to the outside of the step hole (42) and is connected to a limiting hole (114).

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