Button structure for elevator

Abstract

The button structure comprises a spiral cover, an outer frame piece, a word piece assembly and a control module, the word piece assembly comprises a metal word piece and an injection molding frame piece formed on the metal word piece in an injection molding mode, and a plurality of limiting buckle plates and elastic foot parts are arranged on the injection molding frame piece in an injection molding mode. By the adoption of the button structure for the elevator, an operator can abut against the control module to trigger an instruction when pressing the word piece assembly, the injection molding frame piece, the limiting buckle plate and the pin popping part are directly formed on the metal word piece in an injection molding mode, compared with a traditional bonding scheme, connection of the injection molding structure is more reliable, the metal word piece can be effectively prevented from being disengaged, and the service life of the elevator is prolonged. Meanwhile, clamping connection is achieved through the limiting buckle plate and the outer frame part, pressing resetting of the word piece assembly is achieved through pressing deformation of the elastic foot part, the number of the whole components of the button structure is reduced, assembling is convenient, the production cost is lower, working stability is high, and product competitiveness is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator components, in particular to a button structure for an elevator. Background Art

[0002] As competition in the elevator market intensifies, major elevator manufacturers are tightening their control over product costs. While ensuring product quality, lower-cost products are increasingly accepted by the market. As a key component of the entire elevator operating system, elevator buttons are facing increasing demand and increasingly fierce price competition.

[0003] Traditional elevator buttons consist of a letter plate, transmission parts, an outer frame, a spring, a PCB board, screws, and a screw cap. During assembly, the letter plate and transmission parts need to be bonded together with double-sided tape or UV adhesive. After bonding, the entire assembly needs to be snapped into the outer frame, and then the spring and PCB board are installed. Finally, the PCB board is locked with screws. Not only does this require many parts, making assembly difficult, but it also has high production costs, making it difficult to improve product competitiveness. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the utility model provides a button structure for an elevator which has a simple structure, low cost and strong working stability.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions.

[0006] The present application provides a button structure for an elevator, comprising:

[0007] The screw cover is threadedly connected to the outer cylindrical surface of the frame body;

[0008] The outer frame comprises the frame body, a receiving cavity provided on the frame body and open on one side, wherein a plurality of slots are provided on the circumferential inner wall of the receiving cavity relative to the central axis of the frame body;

[0009] The letter plate assembly includes a metal letter plate and an injection-molded frame formed on the metal letter plate. The metal letter plate is located at the opening of the accommodating cavity. The injection-molded frame is slidably connected to the accommodating cavity and is injection-molded with a plurality of limit gussets and elastic feet at one end thereof near the control module.

[0010] A control module is fixedly arranged on the bottom wall of the accommodating cavity;

[0011] The plurality of limit gussets and the elastic foot parts are respectively arranged in a ring array about the central axis of the metal letter piece, and the plurality of slots correspond to the positions of the plurality of limit gussets and are respectively engaged with the limit gussets at the corresponding positions;

[0012] The injection molded frame can move toward the side close to the control module to abut the control module, and the elastic foot abuts the bottom wall of the accommodating cavity. When the injection molded frame and the control module are in abutment, the elastic foot deforms and has elastic potential energy to drive the injection molded frame to move toward the side away from the control module.

[0013] It is further defined that the above-mentioned button structure for an elevator, wherein the injection-molded frame comprises an inner plastic portion located on a side of the metal letter plate close to the control module, and an outer plastic ring covering a radial edge of the metal letter plate;

[0014] The inner plastic portion is capable of abutting against the control module and is specifically a one-shot injection molded part on the metal letter plate;

[0015] The outer plastic ring, the limiting buckle plate and the elastic foot part are specifically metal letter pieces and secondary injection molded parts on the inner plastic part.

[0016] It is further defined that in the above-mentioned button structure for an elevator, an angle is set between the elastic foot portion and the metal letter plate;

[0017] Wherein, when the outer frame and the letter plate assembly are in a connected state, the angle between the elastic foot portion and the metal letter plate is not equal to 90°.

[0018] It is further defined that in the above-mentioned button structure for an elevator, a positioning column is fixedly provided on the end surface of the inner plastic portion away from the metal letter plate;

[0019] Wherein, when the inner plastic portion and the control module are in contact with each other, the positioning post can contact with the bottom wall of the accommodating cavity.

[0020] It is further defined that in the above-mentioned button structure for an elevator, a positioning platform capable of abutting against the positioning column is fixedly provided on the bottom wall of the accommodating cavity.

[0021] Further defined, in the above-mentioned button structure for an elevator, two mutually parallel limiting plates are fixedly provided on the inner wall of the accommodating cavity at positions corresponding to the slot, and the two limiting plates are respectively provided at positions on both sides of the slot in a circumferential direction with respect to the central axis of the frame body;

[0022] Among them, when the card slot and the limiting buckle plate are in a locked state, the two limiting plates at corresponding positions can respectively abut against the limiting buckle plates to limit the circumferential rotation of the letter piece assembly relative to the outer frame.

[0023] Further defined, in the above-mentioned button structure for an elevator, a plurality of guide bevels are provided on the circumferential inner wall of the accommodating cavity about the central axis of the frame body, and the plurality of guide bevels correspond to the positions of the plurality of slots;

[0024] When the outer frame and the letter plate assembly are installed, the guide bevel can abut against the limiting buckle plate to achieve the clamping guidance between the limiting buckle plate and the clamping slot.

[0025] It is further defined that in the above-mentioned button structure for an elevator, the control module is snap-fitted to the bottom wall of the accommodating cavity.

[0026] It is further defined that in the above-mentioned button structure for an elevator, a locking plate is fixedly provided on the bottom wall of the accommodating cavity, and an embedding groove capable of being embedded with the control module is also provided;

[0027] Wherein, when the control module and the embedding groove are in an embedded state, the locking plate can be locked with the control module.

[0028] It is further defined that, in the above-mentioned button structure for an elevator, the frame body includes a bottom frame portion and a lining portion fixedly disposed on the bottom frame portion;

[0029] The outer frame is connected to the outer circumferential surface of the bottom frame portion through threads, and the lining portion covers an edge of the bottom frame portion close to one end of the metal letter piece.

[0030] The utility model has at least the following beneficial effects:

[0031] When the operator presses the letter piece assembly, it can resist the control module to trigger the instruction. The injection-molded frame, limit buckle plate, and spring foot are directly injection-molded on the metal letter piece. Compared with the traditional bonding solution, the connection of the injection-molded structure is more reliable and can effectively prevent the metal letter piece from detaching. At the same time, the limit buckle plate and the outer frame are snapped together, and the letter piece assembly is pressed and reset by the pressing deformation of the spring foot, which reduces the number of overall components of the button structure. It is not only easy to assemble, but also has lower production costs and strong working stability, which greatly improves the competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural diagram of a button structure for an elevator according to an embodiment of the present application;

[0033] Figure 2 This is a schematic exploded view of a button structure for an elevator according to an embodiment of the present application;

[0034] Figure 3 This is a structural diagram of the "word piece assembly 300" in the button structure for an elevator according to an embodiment of the present application;

[0035] Figure 4 This is a structural diagram of the "word piece assembly 300" in the button structure for an elevator according to an embodiment of the present application;

[0036] Figure 5This is a cross-sectional view of the structure of the "letter piece assembly 300" in the button structure for an elevator according to an embodiment of the present application;

[0037] Figure 6 This is a schematic diagram of the installation of the "outer frame 200 and control module 400" in the button structure for an elevator according to an embodiment of the present application;

[0038] Figure 7 This is a schematic exploded view of the structure of the "outer frame member 200" in the button structure for an elevator according to an embodiment of the present application.

[0039] Reference numerals

[0040] Screw cap 100, outer frame 200, frame body 210, bottom frame 211, lining ring 212, accommodating cavity 220, slot 230, limiting plate 240, guide slope 250, positioning platform 260, embedding groove 270, locking plate 280, letter plate assembly 300, metal letter plate 310, injection-molded frame 320, inner plastic part 321, outer plastic ring 322, limiting plate 330, spring foot 340, positioning column 350, control module 400. DETAILED DESCRIPTION

[0041] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0042] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0043] The button structure for an elevator provided by the embodiment of the present application is described in detail below with reference to specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0044] like Figures 1 to 7 As shown, an embodiment of the present application provides a button structure for an elevator, including a screw cover 100 , an outer frame 200 , a letter piece assembly 300 , and a control module 400 .

[0045] The outer frame 200 includes a frame body 210 and a accommodating cavity 220 which is arranged on the frame body 210 and is open on one side. The control module 400 is fixedly arranged on the bottom wall of the accommodating cavity 220. The letter plate assembly 300 includes a metal letter plate 310 and an injection-molded frame 320 injection-molded on the metal letter plate 310. The metal letter plate 310 is located at the opening position of the accommodating cavity 220. The injection-molded frame 320 is slidably connected to the accommodating cavity 220 and is injection-molded with multiple limit buckle plates 330 and elastic feet 340 near one end of the control module 400.

[0046] A plurality of limit clips 330 and elastic feet 340 are arranged in a circular array about the central axis of the metal letter plate 310. The elastic feet 340 abut against the bottom wall of the accommodating cavity 220. A plurality of card slots 230 are provided on the circumferential inner wall of the accommodating cavity 220 about the central axis of the frame body 210. The plurality of card slots 230 correspond to the positions of the plurality of limit clips 330 and are respectively engaged with the limit clips 330 at the corresponding positions.

[0047] Among them, the screw cover 100 is threadedly connected to the outer cylindrical surface of the frame body 210, and the injection molded frame 320 can move toward the side close to the control module 400 to abut the control module 400; when the injection molded frame 320 and the control module 400 are in abutment, the elastic foot 340 is deformed and has elastic potential energy to drive the injection molded frame 320 to move toward the side away from the control module 400.

[0048] When assembling the button structure, first install the control module 400 on the bottom wall of the accommodating cavity 220, then buckle the letter plate assembly 300 into the accommodating cavity 220, and finally install the screw cover 100 on the frame body 210 to complete the assembly.

[0049] Initially, the metal letter plate 310 is located at the opening of the accommodating cavity 220. The injection molded frame 320 does not interfere with the control module 400. The elastic foot portion 340 abuts against the bottom wall of the accommodating cavity 220. At this time, the accommodating cavity 220 has not deformed and has not accumulated elastic potential energy, or has elastic potential energy that drives the injection molded frame 320 to move away from the control module 400. Because the limiting plate 330 is engaged with the slot 230, the letter plate assembly 300 can maintain this initial position.

[0050] When triggered, the user presses the letter piece assembly 300, driving the letter piece assembly 300 to move toward the side close to the control module 400. When the injection molded frame 320 abuts the control module 400, the control module 400 will sense the force and trigger the command. At this time, the elastic foot 340 is deformed and has elastic potential energy that drives the injection molded frame 320 to move toward the side away from the control module 400. When the user releases the pressure on the letter piece assembly 300, the letter piece assembly 300 can be reset under the elastic force of the elastic foot 340.

[0051] In an embodiment of the present application, the above-mentioned button structure for an elevator is adopted. When the operator presses the letter piece assembly 300, it can resist the control module 400 to trigger the instruction. The injection-molded frame 320, the limiting buckle plate 330, and the elastic foot 340 are directly injection-molded on the metal letter piece 310. Compared with the traditional bonding solution, the connection of the injection-molded structure is more reliable and can effectively prevent the metal letter piece 310 from detaching. At the same time, the limiting buckle plate 330 and the outer frame part 200 are snap-connected, and the letter piece assembly 300 is pressed and reset by the pressing deformation of the elastic foot 340, which reduces the number of overall components of the button structure. It is not only convenient for assembly, but also has lower production costs and strong working stability, which greatly improves the competitiveness of the product.

[0052] In a preferred embodiment, as Figures 1 to 5 As shown, the injection molding frame 320 includes an inner molding portion 321 located on a side of the metal plate 310 close to the control module 400 and an outer molding ring 322 covering a radial edge of the metal plate 310 .

[0053] Among them, the inner plastic part 321 can abut against the control module 400, and is specifically a single injection molded part on the metal letter plate 310; the outer plastic ring 322, the limiting buckle plate 330, and the elastic foot part 340 are specifically secondary injection molded parts on the metal letter plate 310 and the inner plastic part 321.

[0054] It can be understood that the letter piece assembly 300 adopts a secondary injection molding process. During processing, the inner plastic part 321 is first injection-molded as an integral part on the metal letter piece 310, and then the outer plastic ring 322, the limiting buckle plate 330, and the elastic foot part 340 are injection-molded as an integral part on the metal letter piece 310 and the inner plastic part 321 assembly. Since the outer plastic ring 322 covers the edge of the metal letter piece 310, it can limit the separation of the metal letter piece 310 relative to the injection molding frame 320, further improving the fixing firmness of the metal letter piece 310.

[0055] In a preferred embodiment, as Figures 1 to 5 As shown, an angle is set between the elastic foot portion 340 and the metal letter plate 310.

[0056] When the outer frame 200 and the letter plate assembly 300 are connected, the angle between the elastic foot portion 340 and the metal letter plate 310 is not equal to 90°.

[0057] It can be understood that since there is an angle between the elastic foot portion 340 and the metal letter plate 310 (not equal to 90°, thereby avoiding the interaction force between the elastic foot portion 340 and the bottom wall of the accommodating cavity 220 being collinear), when the elastic foot portion 340 contacts the bottom wall of the accommodating cavity 220, as the user presses the letter plate assembly 300, the elastic foot portion 340 will deflect and deform toward the side close to the metal letter plate 310, thereby realizing the accumulation of elastic potential energy.

[0058] In a preferred embodiment, as Figures 1 to 5 As shown, a positioning post 350 is fixedly provided on the end surface of the inner plastic portion 321 away from the metal letter plate 310 .

[0059] When the inner plastic portion 321 and the control module 400 are in contact with each other, the positioning post 350 can contact the bottom wall of the accommodating cavity 220 .

[0060] It is understandable that the abutment between the positioning column 350 and the bottom wall of the accommodating cavity 220 can limit the pressing stroke of the letter plate assembly 300 relative to the outer frame 200, thereby preventing the inner plastic part 321 from being over-pressed and causing damage to the control module 400.

[0061] In a preferred embodiment, as Figures 1 to 5 As shown, the positioning post 350 and the inner plastic portion 321 are specifically one-shot injection molded parts on the metal letter plate 310 .

[0062] In a preferred embodiment, as Figure 2 、 Figure 6 、 Figure 7 As shown, two parallel limiting plates 240 are fixedly provided on the inner wall of the accommodating cavity 220 at positions corresponding to the slot 230 . The two limiting plates 240 are respectively arranged at two sides of the slot 230 in the circumferential direction of the central axis of the frame body 210 .

[0063] When the slot 230 and the limiting plate 330 are engaged, the two limiting plates 240 at corresponding positions can respectively abut against the limiting plates 330 to limit the circumferential rotation of the letter plate assembly 300 relative to the outer frame 200 .

[0064] It can be understood that the limiting plate 240 can achieve circumferential limitation between the letter piece assembly 300 and the outer frame 200 to prevent the metal letter piece 310 from positional deviation. At the same time, the limiting plate 240 can guide the pressing of the letter piece assembly 300, further improving the pressing reliability of the letter piece assembly 300.

[0065] In a preferred embodiment, as Figure 2 、 Figure 6 、 Figure 7 As shown, a plurality of guide slopes 250 are provided on the circumferential inner wall of the accommodating cavity 220 about the central axis of the frame body 210 , and the plurality of guide slopes 250 correspond to the positions of the plurality of slots 230 .

[0066] When the outer frame 200 and the letter plate assembly 300 are installed, the guide slope 250 can abut against the limiting buckle plate 330 to achieve the locking and guiding between the limiting buckle plate 330 and the locking slot 230 .

[0067] In a preferred embodiment, as Figure 2 、 Figure 6 、 Figure 7 As shown, a positioning platform 260 capable of abutting against the positioning post 350 is fixedly provided on the bottom wall of the accommodating cavity 220 .

[0068] It is understandable that the travel limit of the relative movement between the letter plate assembly 300 and the outer frame 200 can be achieved by the abutment between the positioning column 350 and the positioning platform 260 .

[0069] In a preferred embodiment, as Figure 2 、 Figure 6 、 Figure 7 As shown, the control module 400 is engaged with the bottom wall of the accommodating cavity 220 .

[0070] In a preferred embodiment, as Figure 2 、 Figure 6 、 Figure 7 As shown, a locking plate 280 is fixedly provided on the bottom wall of the accommodating cavity 220 , and an embedding groove 270 capable of being embedded with the control module 400 is also provided.

[0071] When the control module 400 and the locking groove 270 are in the engaged state, the locking plate 280 can be engaged with the control module 400 .

[0072] It is understandable that the installation method of the control module 400 on the bottom wall of the accommodating chamber 220 is not limited to the above one. For example, the control module 400 can be installed on the bottom wall of the accommodating chamber 220 by bolts, which will not be described in detail here.

[0073] In a preferred embodiment, as Figure 7 As shown, the frame body 210 includes a bottom frame portion 211 and a lining portion 212 fixedly disposed on the bottom frame portion 211 .

[0074] The outer frame 200 is threadedly connected to the outer circumferential surface of the bottom frame portion 211 , and the lining portion 212 covers an edge of the bottom frame portion 211 close to the metal letter plate 310 .

[0075] It is understandable that the lining portion 212 can be used to edge the end of the bottom frame portion 211 away from the control module 400, reduce the gap between the letter plate assembly 300 and the mounting base, and improve the overall installation aesthetics of the button assembly.

[0076] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0077] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A button structure for an elevator, characterized in that: include: The screw cover is threadedly connected to the outer cylindrical surface of the frame body; The outer frame comprises the frame body, a receiving cavity provided on the frame body and open on one side, wherein a plurality of slots are provided on the circumferential inner wall of the receiving cavity relative to the central axis of the frame body; The letter plate assembly includes a metal letter plate and an injection-molded frame formed on the metal letter plate. The metal letter plate is located at the opening of the accommodating cavity. The injection-molded frame is slidably connected to the accommodating cavity and is injection-molded with a plurality of limit gussets and elastic feet at one end thereof near the control module. A control module is fixedly arranged on the bottom wall of the accommodating cavity; The plurality of limit gussets and the elastic foot parts are respectively arranged in a ring array about the central axis of the metal letter piece, and the plurality of slots correspond to the positions of the plurality of limit gussets and are respectively engaged with the limit gussets at the corresponding positions; The injection molded frame can move toward the side close to the control module to abut the control module, and the elastic foot abuts the bottom wall of the accommodating cavity. When the injection molded frame and the control module are in abutment, the elastic foot deforms and has elastic potential energy to drive the injection molded frame to move toward the side away from the control module.

2. A button structure for an elevator according to claim 1, characterized in that: The injection molding frame comprises an inner plastic portion located on the side of the metal letter plate close to the control module and an outer plastic ring covering the radial edge of the metal letter plate; The inner plastic portion is capable of abutting against the control module and is specifically a one-shot injection molded part on the metal letter plate; The outer plastic ring, the limiting buckle plate and the elastic foot part are specifically metal letter pieces and secondary injection molded parts on the inner plastic part.

3. A button structure for an elevator according to claim 1 or 2, characterized in that: An angle is provided between the elastic foot portion and the metal letter piece; Wherein, when the outer frame and the letter plate assembly are in a connected state, the angle between the elastic foot portion and the metal letter plate is not equal to 90°.

4. A button structure for an elevator according to claim 2, characterized in that: A positioning post is fixed on the end surface of the inner plastic portion away from the metal letter plate; Wherein, when the inner plastic portion and the control module are in contact with each other, the positioning post can contact with the bottom wall of the accommodating cavity.

5. A button structure for an elevator according to claim 1 or 4, characterized in that: A positioning platform capable of abutting against the positioning column is fixedly provided on the bottom wall of the accommodating cavity.

6. The button structure for an elevator according to claim 1, characterized in that: Two mutually parallel limiting plates are fixedly provided on the inner wall of the accommodating cavity at positions corresponding to the card slot, and the two limiting plates are respectively provided at two sides of the card slot in the circumferential direction of the central axis of the frame body; Among them, when the card slot and the limiting buckle plate are in a locked state, the two limiting plates at corresponding positions can respectively abut against the limiting buckle plates to limit the circumferential rotation of the letter piece assembly relative to the outer frame.

7. A button structure for an elevator according to claim 1 or 6, characterized in that: A plurality of guide slopes are provided on the circumferential inner wall of the accommodating cavity relative to the central axis of the frame body, and the plurality of guide slopes correspond to the positions of the plurality of card slots; When the outer frame and the letter plate assembly are installed, the guide bevel can abut against the limiting buckle plate to achieve the clamping guidance between the limiting buckle plate and the clamping slot.

8. The button structure for an elevator according to claim 1, characterized in that: The control module is clamped with the bottom wall of the accommodating cavity.

9. A button structure for an elevator according to claim 1 or 8, characterized in that: A locking plate is fixedly provided on the bottom wall of the accommodating cavity, and is also provided with an embedding groove capable of embedding with the control module; Wherein, when the control module and the embedding groove are in an embedded state, the locking plate can be locked with the control module.

10. The button structure for an elevator according to claim 1, characterized in that: The frame body includes a bottom frame portion and a lining ring portion fixedly arranged on the bottom frame portion; The outer frame is connected to the outer circumferential surface of the bottom frame portion through threads, and the lining portion covers an edge of the bottom frame portion close to one end of the metal letter piece.

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