Lap joint type safety switch
By introducing an adjustable preload limiter into the elevator door lock switch, the problem of the spring being compressed in both working and non-working states is solved, extending the service life of the spring and preventing bounce, thus achieving stability and flexibility of the switch.
Patent Information
- Application Number
- CN202423297198.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2034-12-31
AI Technical Summary
In existing elevator door lock switches, the spring contacts are under continuous pressure in both working and non-working states, which affects their lifespan and flexibility of use, and is prone to bouncing.
Design a snap-fit safety switch, which ensures that the spring is compressed in the working state and not compressed in the non-working state by adjusting the pressure between the pre-compression limiter and the spring. The initial spring force of the spring is adjusted by using an adjustable screw or spring.
It extends the service life of the spring, avoids bouncing, ensures the stability and flexibility of the switch, and prevents poor contact.
Smart Images
Figure CN223884297U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of elevator switch, and relates to a lap joint type safety switch. BACKGROUND
[0002] In the field of elevators, the contact type door switch often adopts the contact and contact seat type door lock switch, which plays a locking role on the elevator landing door and is one of the important elevator safety components.
[0003] At present, the common door lock switch structure is divided into two forms, one is the connection mode of the contact and the contact seat without the elastic force of the elastic sheet, and in this mode, the elastic sheet is prone to obvious elastic rebound. The other is to set a fixed part to provide a pre-pressing force, so that the elastic sheet is always under a certain elastic force, and in this mode, the elastic sheet is continuously pressed in the working and non-working states, and the long-term pressure affects the service life, flexibility and stability of the elastic sheet. CONTENT OF THE UTILITY MODEL
[0004] In order to solve or at least partially solve the above technical problems, the present application provides a lap joint type safety switch: comprising: a contact seat, two matching holes are formed on one side of the contact seat, the contact seat has a containing chamber inside, an elastic sheet is arranged in the containing chamber and connected with the contact seat through a fixed block at one end, and a contact point is arranged at the other end, a pre-pressing limiting part is arranged in the containing chamber of the contact seat, and one end of the pre-pressing limiting part presses the elastic sheet and provides an initial elastic force of the elastic sheet;
[0005] A contact head comprises a mounting seat and two guide sheets, and the two guide sheets are inserted into the matching holes and in contact with the contact point in the connected state of the contact seat and the contact head; wherein,
[0006] The pressing force between the pre-pressing limiting part and the elastic sheet is adjustable.
[0007] According to one embodiment of the present application, one end of the pre-pressing limiting part is fixedly connected with the contact seat, and the other end is elastically connected to the middle part of the elastic sheet.
[0008] According to one embodiment of the present application, the pre-pressing limiting part is a spring.
[0009] According to one embodiment of the present application, the pre-pressing limiting part is an adjustable screw rod.
[0010] An installation hole is formed on the contact seat, one end of the pre-pressing limiting part is arranged in the installation hole and extends into the containing chamber and abuts against the elastic sheet;
[0011] The pre-pressing limiting part is threadedly connected with the contact seat, so as to adjust the pressing force applied to the elastic sheet by adjusting the fitting depth of the pre-pressing limiting part and the installation hole.
[0012] According to one embodiment of the present application, the contact seat is concave at the top of the position where the pre-pressing limiting piece is installed, and the mounting hole is arranged in the concave area.
[0013] According to one embodiment of the present application, the pre-pressing limiting piece is arranged on the side of the elastic sheet close to the contact point.
[0014] According to one embodiment of the present application, the lateral dimension of the matching hole decreases along the matching direction between the contact head and the contact seat.
[0015] According to one embodiment of the present application, the contact seat is provided with a wiring bolt and a connecting nut.
[0016] The contact seat is also provided with a connecting hole and a dustproof hole, the connecting hole is used for mounting the contact seat to a target position through a threaded connecting piece, and the dustproof hole is used for preventing dust accumulation under the elastic sheet.
[0017] The lap type safety switch provided by the present application can adjust the pressing force between the pre-pressing limiting piece and the elastic sheet, so that the elastic sheet does not need to be in a pressed state in the working or non-working state, thereby ensuring the service life of the elastic sheet, making the elastic sheet can maintain a good use state in the working state, and the pre-pressing limiting piece can make the elastic sheet have a larger elastic force when working, thereby preventing poor contact of the switch, and avoiding obvious bouncing phenomenon of the elastic sheet. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present application, the related drawings will be briefly introduced below. It can be understood that the drawings described below are only used to illustrate some embodiments of the present application, and those skilled in the art can also obtain many other technical features and connection relationships not mentioned in the text from these drawings.
[0019] Figure 1 It is a structure schematic view of the lap type safety switch of the present application;
[0020] Figure 2 It is a structure schematic view of the lap type safety switch of the present application; Figure 1 It is a sectional view of one angle of the lap type safety switch of the present application;
[0021] Figure 3 It is a sectional view of one angle of the lap type safety switch of the present application; Figure 1 It is a sectional view of one angle of the lap type safety switch of the present application;
[0022] Figure 4 It is a structure schematic view of one embodiment of the pre-pressing limiting piece of the present application;
[0023] Figure 5 It is a structure schematic view of another embodiment of the pre-pressing limiting piece of the present application.
[0024] Reference numerals:
[0025] 1, contact seat; 11, fitting hole; 12, accommodating chamber; 13, elastic sheet; 14, fixed block; 15, contact; 16, mounting hole; 17, wiring bolt; 18, connecting nut; 19, connecting hole; 191, dustproof hole;
[0026] 2, pre-pressing limiting piece;
[0027] 3, contact; 31, mounting seat; 32, guide sheet. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0029] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0030] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0031] The present disclosure will be described below with reference to the accompanying drawings, which show several embodiments of the present disclosure. It should be understood that the present disclosure can be presented in many different ways, and is not limited to the embodiments described below; it should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.
[0032] The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings in the embodiments of the present application.
[0033] Please refer to Figures 1 to 5 The present application provides a lap joint safety switch, which comprises a contact seat 1 and a contact 3. The contact seat 1 is provided with two matching holes 11 on one side. The contact seat 1 has a receiving chamber 12 inside. A spring piece 13 is arranged in the receiving chamber 12 and connected to the contact seat 1 through a fixing block 14 at one end and has a contact point 15 at the other end. The contact seat 1 is provided with a pre-pressing limiting piece 2 in the receiving chamber 12. The pre-pressing limiting piece 2 is in contact with the spring piece 13 at one end and provides an initial elastic force for the spring piece 13. The contact 3 comprises a mounting seat 31 and two guide pieces 32. The two guide pieces 32 are inserted into the matching holes 11 and in contact with the contact point 15 when the contact seat 1 and the contact 3 are connected. The pressing force between the pre-pressing limiting piece 2 and the spring piece 13 is adjustable.
[0034] Compared with the mode in the prior art that the spring piece 13 is always pressed, the pre-pressing limiting piece 2 provided in the present application can adjust the pressing force between the spring piece 13. Thus, the spring piece 13 is pressed in the working state, and will not be in a high pressing force state in the non-working state, thereby ensuring the service life of the spring piece 13.
[0035] It can be seen that the adjustable mode of the pre-pressing limiting piece 2 can be adjusted by external force or the structure of the pre-pressing limiting piece 2 itself.
[0036] In one embodiment, specifically referring to Figure 5 The pre-pressing limiting piece 2 can adjust the pressing force of the spring piece 13 by its own elastic force.
[0037] Specifically, one end of the pre-pressing limiting piece 2 is fixedly connected to the contact seat 1, and the other end is elastically connected to the middle part of the spring piece 13.
[0038] Specifically, the pre-pressing limiting piece 2 is a spring.
[0039] That is, in the initial state, the spring is in a non-compressed state and in contact with the spring piece 13. In the working state, the guide piece 32 is in contact with the contact point 15 and forms a pressing force. The spring is subjected to a pulling force, and then tends to move upward with the spring piece 13 and contact with the guide piece 32, thereby ensuring that the spring piece 13 will not have a significant bouncing phenomenon.
[0040] In some other embodiments, the pre-pressing limiting piece 2 is adjustable by external force.
[0041] Specifically referring to Figure 4The pre-pressing limiting piece 2 is an adjustable screw; the contact seat 1 is provided with a mounting hole 16, one end of the pre-pressing limiting piece 2 is arranged in the mounting hole 16 and extends into the accommodating chamber 12 and abuts against the elastic sheet 13; the pre-pressing limiting piece 2 is threadedly connected with the contact seat 1, and the abutting pressure applied to the elastic sheet 13 is adjusted by adjusting the fitting depth of the pre-pressing limiting piece 2 and the mounting hole 16.
[0042] That is, the fitting depth of the adjustable screw and the mounting hole 16 can be adjusted as required, and then the initial abutting pressure borne by the elastic sheet 13 is adjusted.
[0043] In this way, the state of the elastic sheet 13 can be flexibly adjusted, for example, in a non-working state, the adjustable screw is at least partially screwed out of the mounting hole 16, and the elastic sheet 13 is not abutted, thereby ensuring the service life and stability of the elastic sheet 13.
[0044] Further, before the working state is switched, the fitting depth of the adjustable screw and the mounting hole 16 is adjusted, so that one end of the adjustable screw abuts against the elastic sheet 13, so that the elastic sheet 13 forms an initial abutting pressure, and then when the elastic sheet 13 cooperates with the guide sheet 32, the elastic sheet 13 is pressed to be separated from the adjustable screw, and the elastic sheet 13 has an upward elastic force in the pressed state, which drives the elastic sheet 13 to stably cooperate with the guide sheet 32, thereby ensuring that the elastic sheet 13 does not have a significant bouncing phenomenon.
[0045] Further, the contact seat 1 is concave at the top of the position where the pre-pressing limiting piece 2 is arranged, and the mounting hole 16 is arranged in the concave area.
[0046] That is, the contact seat 1 is concave at the top of the pre-pressing limiting piece 2, the distance from the elastic sheet 13 to the top of the contact seat 1 is shortened, and the adjustable screw with a conventional structure can also meet the adjustment requirements, without the need for a specially-made screw with a very long length to adjust, thereby reducing the adjustment difficulty.
[0047] Please continue to refer to Figures 1 to 3 The pre-pressing limiting piece 2 is arranged on the side of the elastic sheet 13 close to the contact point 15.
[0048] In this way, the size of the abutting pressure on the elastic sheet 13 is reduced, and the abutting pressure on the elastic sheet 13 is more easily adjusted.
[0049] In one embodiment, the lateral size of the fitting hole 11 decreases along the fitting direction between the contact head 3 and the contact seat 1.
[0050] In order to avoid the contact head 3 and the contact seat 1 from being rubbed during the contact between the guide sheet 32 and the contact point 15, the cross section of the fitting hole 11 decreases from the top to the bottom, thereby guiding the insertion process of the contact head 3 and improving the fitting stability of the contact head 3 and the contact seat 1.
[0051] It should be noted that the contact seat 1 of the application is further provided with a wiring bolt 17 and a connecting nut 18. The wiring bolt 17 is provided with a wiring opening hole corresponding to the position of the side contact seat 1, and the wiring bolt 17 is provided with a screwing opening hole corresponding to the top of the contact seat 1. The connecting nut is clamped into the clamping groove in the inside of the contact seat 1.
[0052] It can be known that the contact seat 1 is further provided with a connecting hole 19 and a dustproof hole 191. The connecting hole 19 is used for mounting the contact seat 1 to the target position through a threaded connecting piece. The dustproof hole 191 includes a counterbore below the elastic sheet 13 and a through hole connected with the counterbore. The through hole is arranged on the side of the contact seat 1 and is in communication with the outside. In this way, the dust below the elastic sheet 13 can be discharged, and the downward space of the elastic sheet 13 is prevented from being hindered by the dust.
[0053] In summary, the lap type safety switch provided by the application can adjust the pressing force between the pre-pressing limiting piece 2 and the elastic sheet 13. Therefore, the elastic sheet 13 does not need to be in a pressed state in the working or non-working state, which ensures the service life of the elastic sheet 13, makes the elastic sheet 13 maintain a good use state in the working state, and enables the pre-pressing limiting piece 2 to make the elastic sheet 13 have a larger elastic force in the working state, thereby preventing poor contact of the switch and avoiding obvious bouncing of the elastic sheet 13.
[0054] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be indirectly in contact through an intermediate medium. Moreover, the first feature can be above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature can be below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is lower than that of the second feature.
[0055] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.
[0056] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application, but not limited to; although the present application is described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still be modified to the technical solutions recorded in the foregoing examples, or part of the technical features are replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A latching safety switch, characterized in that, The application relates to a connector, which comprises a base (1) provided with two matching holes (11) on one side, a containing chamber (12) in the base (1), a spring piece (13) arranged in the containing chamber (12) and connected with the base (1) through a fixed block (14) at one end and provided with a contact point (15) at the other end, a pre-pressing limiting piece (2) arranged in the containing chamber (12) of the base (1) and abutting against the spring piece (13) at one end to provide initial elasticity of the spring piece (13), a contact head (3) comprising a mounting base (31) and two guide pieces (32), and the two guide pieces (32) are arranged in the matching holes (11) and contact with the contact point (15) when the base (1) is connected with the contact head (3). The abutting pressure between the pre-pressing limiting piece (2) and the spring piece (13) is adjustable. One end of the pre-pressing limiting piece (2) is fixedly connected with the base (1), and the other end is elastically connected with the middle part of the spring piece (13). The pre-pressing limiting piece (2) is a spring.
2. The bridging safety switch according to claim 1, characterized in that The pre-pressing limiting piece (2) is an adjustable screw.
3. The bridging safety switch of claim 2, wherein, An installation hole (16) is formed in the base (1), one end of the pre-pressing limiting piece (2) is arranged in the installation hole (16) and extends into the containing chamber (12) and abuts against the spring piece (13).
4. The bridging safety switch of claim 1, wherein, The pre-pressing limiting piece (2) is threadedly connected with the base (1) to adjust the abutting pressure applied to the spring piece (13) by adjusting the matching depth of the pre-pressing limiting piece (2) and the installation hole (16). The base (1) is concave at the top of the position where the pre-pressing limiting piece (2) is arranged, and the installation hole (16) is formed in the concave area. The pre-pressing limiting piece (2) is arranged on the side of the spring piece (13) close to the contact point (15).
5. The bridging safety switch according to claim 4, characterized in that The matching holes (11) are gradually reduced in lateral dimension along the matching direction between the contact head (3) and the base (1).
6. The bridging safety switch of claim 1, wherein, The base (1) is provided with a wiring bolt (17) and a connecting nut (18).
7. The bridging safety switch of claim 1, wherein, The base (1) is further provided with a connecting hole (19) and a dustproof hole (191), the connecting hole (19) is used for mounting the base (1) to a target position through a threaded connecting piece, and the dustproof hole (191) is used for preventing dust from accumulating under the spring piece (13).
8. The bridging safety switch of claim 1, wherein,