Elevator roller switch

Abstract

The application discloses an elevator roller switch, which comprises a shell, a roller support connected to the bottom of the shell through a rotating shaft, rollers installed at both ends of the roller support, a static contact installed on the upper part of the end of the shell far from the rotating shaft, a spring vertically arranged in the shell, a guide rod connected to the lower end of the spring, the guide rod vertically penetrating through a guide hole on the shell and being rotatably connected to one end of the roller support, and a through hole arranged in the middle of the guide rod and penetrating through the guide rod left and right; a spring piece horizontally penetrating through the through hole, a moving contact arranged at the first end of the spring piece and used for contacting the static contact, and the second end of the spring piece being fixedly connected with the shell. The application can solve the problems of unstable contact stroke and easy spring falling out caused by the existing roller switch using a swing arm as a spring driving component.

Description

TECHNICAL FIELD

[0001] The present application relates to elevator accessory technical field, specifically a kind of elevator roller switch. BACKGROUND

[0002] Elevator roller switch equipment is mainly used as the safety switch of elevator door and other equipment, the existing elevator roller switch generally includes shell, roller support and swing arm, such as the utility model patent with publication number CN205367360U, the rotation of roller support drives swing arm to carry out arc swing, swing arm drives spring piece to move, the contact and separation of two contacts are realized, spring for resetting is generally installed between the end of swing arm and shell, but the current rotating arm structure assembly angle is difficult to control, a little error will cause product contact contact stroke unstable, resulting in low production yield, low assembly efficiency;And the rotating arm structure of prior art scheme moves with a certain angle (spring inclination) with reset spring, there is the risk of spring disengagement.

[0003] In addition, since the swing stroke of rotating arm occupies a relatively large space, the volume of elevator roller switch is relatively large, and there are many parts, so it is difficult to effectively protect the internal components, which affects the service life and later maintenance of the product. SUMMARY

[0004] The present application provides a kind of elevator roller switch, can solve the problem of unstable contact contact stroke and spring easy disengagement caused by swing arm as spring piece driving component in existing roller switch.

[0005] To achieve the above object, the present application provides the following technical scheme: a kind of elevator roller switch, including: shell, the bottom of the shell is connected with roller support by rotating shaft, both ends of the roller support are equipped with roller, the upper part of the end of the shell interior away from rotating shaft is equipped with static contact, the interior of the shell is vertically provided with spring, the lower end of the spring is connected with guide rod, the guide rod is vertically connected with the end of roller support by rotating through the guide hole on the shell, the middle part of the guide rod is provided with left and right through pass-through opening;

[0006] spring piece, from the pass-through opening, the first end of the spring piece is provided with dynamic contact for contacting with static contact, the second end of the spring piece is connected with shell fixedly, guide rod replaces rotating arm, guide rod and spring are on the same central axis, spring and guide rod move coaxially without inclination when switch acts, greatly improve the stability of spring, improve the reliability of product, and the space occupied by the up and down movement of guide rod is very small, greatly reduce the width of product, conducive to the miniaturization of product.

[0007] As preferred, the end of the roller support connected with the guide rod is provided with a pin shaft, the lower end of the guide rod is provided with a waist hole, the pin shaft passes through the waist hole, and the swing of the roller support can be converted into the up-down lifting of the guide rod.

[0008] As preferred, the top of the guide rod is provided with a spring positioning groove corresponding to the spring, the middle of the spring positioning groove is provided with a spring positioning column protruding upward, the stability of the contact and cooperation between the spring and the guide rod can be improved, and the spring is not easy to deviate radially.

[0009] As preferred, the side wall of the guide rod is provided with a sliding guide structure matched with the inner side wall of the shell and / or the inner side wall of the guide hole, the sliding guide structure can guide the lifting of the guide rod, and prevent the guide rod from being skewed or rotated.

[0010] As preferred, the inner side upper portion of the shell is provided with a mounting table, a spring positioning seat corresponding to the spring is mounted on the mounting table, the lower side of the spring positioning seat is provided with a positioning inner cavity, and the upper end of the spring extends into the positioning inner cavity; the mounting table facilitates the mounting of the spring positioning seat, and the spring positioning seat matched with the guide rod can limit the two ends of the spring.

[0011] As preferred, the stationary contact is mounted on the first conductive connecting piece, the first conductive connecting piece is clamped on the mounting table, and the second end of the spring plate is connected with the second conductive connecting piece; the first conductive connecting piece and the second conductive connecting piece facilitate wiring of the spring plate and the stationary contact.

[0012] As preferred, the inner side of the shell near the rotating shaft is provided with a multi-cavity boss at the lower portion, at least one hollow cavity is arranged in the multi-cavity boss, a first fixing block and a second fixing block are arranged in the hollow cavity, the second conductive connecting piece and the second end of the spring plate are connected with the first fixing block through the first screw passing through the side of the multi-cavity boss, a mounting support is mounted on one side of the shell, and the mounting support is connected with the second fixing block through the second screw passing through the side wall of the shell; the multi-cavity boss can utilize the internal space of the shell to arrange more fixing structures, and the overall strength of the shell can be increased; the first fixing block and the second fixing block can realize locking and fixing of the first screw and the second screw, and no threaded hole needs to be arranged on the shell during processing.

[0013] As preferred, the end face of the shell near the rotating shaft is provided with an insertion groove on the upper side, and a wire guide block is inserted into the insertion groove; the wire guide block can fix the connecting wire entering the shell and seal the inside of the shell.

[0014] As preferred, the side wall and the top wall of the shell are open, and a detachable side plate is mounted on the outside of the shell, which covers and surrounds the open side wall and the top wall of the shell, so that the internal structure of the whole shell is exposed after the detachable side plate is detached, facilitating the replacement and maintenance of components and the assembly.

[0015] As preferred, the two ends of the detachable side plate are provided with buckle plates extending to the side wall of the shell, the buckle plates are provided with buckle holes, the side wall of the shell is provided with limiting grooves matched with the buckle plates, and the limiting grooves are provided with buckle protrusions matched with the buckle holes, so that the sealing property and the firmness of the detachable side plate after being buckled with the shell are ensured through the positioning and inserting of the buckle plates and the limiting grooves.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] In the present application, the guide rod is used to replace the rotating arm, the guide rod and the spring are on the same central axis, the spring moves coaxially with the guide rod without tilting when the switch operates, the stability of the spring is greatly improved, the reliability of the product is improved, the up and down movement of the guide rod occupies a small space, the width of the product is greatly reduced, the miniaturization of the product is facilitated, the overall protection effect is good, the service life is improved, the later maintenance and replacement are facilitated, and thus the problems of unstable contact travel of the contact and easy falling of the spring caused by the rotating arm as a spring driving component of the existing roller switch are solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective view of the present application;

[0019] Figure 2 is a main view of the contact non-contact state of the present application;

[0020] Figure 3 is a main view of the contact contact state of the present application;

[0021] Figure 4 is a perspective view of the present application after the detachable side plate is removed;

[0022] Figure 5 is a perspective view of the shell of the present application;

[0023] Figure 6 is a schematic view of the mounting process of the detachable side plate of the present application.

[0024] REFERENCE SIGNS:

[0025] 1. Housing; 11. Multi-cavity boss; 111. Positioning groove; 12. Hollowed-out cavity; 13. First fixing block; 14. Mounting platform; 141. Positioning seat slot; 142. Electrical connector slot; 15. Spring; 16. Spring positioning seat; 161. Positioning inner cavity; 17. Second conductive connector; 18. First screw; 19. Groove; 2. Removable side plate; 21. Second screw; 22. First conductive connector; 221. Limiting fold; 23. 1. Threading guide block; 24. Insertion slot; 25. Guide hole; 26. Buckle protrusion; 27. Pin shaft; 28. Buckle plate; 29. ​​Buckle hole; 3. Roller; 31. Frame groove; 32. Limiting groove; 4. Mounting bracket; 5. Rotating shaft; 6. Roller bracket; 7. Guide rod; 71. Through port; 72. Contact boss; 73. Spring positioning groove; 74. Protruding rib; 75. Spring positioning post; 76. Waist hole; 8. Moving contact; 9. Spring piece; 10. Stationary contact. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0027] like Figures 1-6 As shown, the present invention provides the following technical solution to solve the problems of unstable contact stroke and easy spring dislodgement caused by the use of a swing arm as a spring-driven component in existing roller switches: An elevator roller switch includes a housing 1. The bottom of the housing 1 is connected to a roller bracket 6 via a rotating shaft 5. Rollers 3 are installed at both ends of the roller bracket 6. A stationary contact 10 is installed at the upper part of the end of the housing 1 away from the rotating shaft 5. A spring 15 is vertically arranged inside the housing 1. A guide rod 7 is connected to the lower end of the spring 15. The guide rod 7 passes vertically through a guide hole 25 on the housing 1 and is rotatably connected to one end of the roller bracket 6. A through-hole 71 is provided in the middle of the guide rod 7.

[0028] The spring 9 passes laterally through the through 71. The first end of the spring 9 is provided with a moving contact 8 for contacting the stationary contact 10. The second end of the spring 9 is connected and fixed to the housing 1. The guide rod 7 replaces the rotating arm. The guide rod 7 and the spring 15 are on the same central axis. When the switch is activated, the spring 15 and the guide rod 7 move coaxially without tilting, which greatly improves the stability of the spring and enhances the reliability of the product. Moreover, the vertical movement of the guide rod 7 occupies very little space, which greatly reduces the width of the product and is conducive to the miniaturization of the product.

[0029] As the working principle in the embodiment, the elevator roller switch is installed on the upper end of the elevator door and moves with the movement of the elevator door, when the roller bracket 6 of the elevator roller switch meets the protruding part, it rotates around the rotating shaft 5, when the one end of the roller bracket 6 is upturned, it pushes the guide rod 7 to rise and compresses the spring 15, the elastic sheet 9 itself has elasticity, so when the guide rod 7 rises, the elastic sheet 9 also deforms and always contacts the top of the through hole 71, the moving contact 8 rises until it contacts the static contact 10, so that the moving contact 8 and the static contact 10 can realize conduction, at this time, the guide rod 7 can still move upwards for a distance, until the roller bracket 6 cannot rotate.

[0030] When the roller bracket 6 leaves the protruding part, the spring 15 drives the guide rod 7 to move downwards, realizes the reset of the roller bracket 6, and presses the elastic sheet 9 downwards, so that the moving contact 8 and the static contact 10 are separated.

[0031] Among them, the end of the roller bracket 6 connected with the guide rod 7 is provided with a pin shaft 27, and the lower end of the guide rod 7 is provided with a waist hole 76, the pin shaft 27 passes through the waist hole 76, so that the swing of the roller bracket 6 can be converted into the up and down movement of the guide rod 7. The guide hole 25 can adopt a non-cylindrical structure, which is matched with the shape of the guide rod 7, so as to prevent the guide rod 7 from rotating.

[0032] In order to reduce the friction between the guide rod 7 and the elastic sheet 9, the top of the through hole 71 is provided with a downward protruding contact boss 72, the surface of the contact boss 72 is a circular arc surface, and the contact boss 72 contacts the elastic sheet 9 when the guide rod 7 descends, the contact between the contact boss 72 and the elastic sheet 9 can reduce the friction, and the contact boss 72 is arranged at the top of the through hole 71 close to the one end of the moving contact 8.

[0033] In order to position the spring 15, the top of the guide rod 7 is provided with a spring positioning groove 73 corresponding to the spring 15, the middle part of the spring positioning groove 73 is provided with a spring positioning column 75 protruding upwards, which can improve the stability of the contact between the spring 15 and the guide rod 7, and the spring 15 is not easy to deviate radially, the positioning column can also be arranged in the middle part of the spring positioning groove 73, the lower end of the spring 15 is sleeved outside the positioning column, so as to prevent the spring 15 from deviating.

[0034] In order to further limit the up and down movement of the guide rod 7, the side wall of the guide rod 7 is provided with a sliding guide structure matched with the inner side wall of the shell 1 and / or the inner side wall of the guide hole 25, the sliding guide structure can guide the up and down movement of the guide rod 7, so as to prevent the guide rod 7 from being skewed or rotating, in the embodiment, the sliding guide structure can adopt the cooperation of the protruding ribs 74 and the sliding grooves 19, or the cooperation of the sliding rails and the sliding blocks.

[0035] As Figures 2-5As shown, the inner upper portion of the shell 1 is provided with a mounting table 14, the mounting table 14 is provided with a spring positioning seat 16 at a position corresponding to the spring 15, the lower side of the spring positioning seat 16 is provided with a positioning inner cavity 161, the upper end of the spring 15 extends into the positioning inner cavity 161, so that the upper and lower ends of the spring 15 are reliably positioned, so that the compression and expansion of the spring 15 will not be deflected, the mounting table 14 facilitates the installation of the spring positioning seat 16, and the spring positioning seat 16 cooperates with the guide rod 7 to limit the two ends of the spring 15, specifically, the middle of the mounting table 14 is provided with a notch, and the two sides of the notch are symmetrically provided with positioning seat insertion grooves 141, the two sides of the spring positioning seat 16 can be inserted into the positioning seat insertion grooves 141 from front to back, so that the spring 15 is convenient to disassemble and replace.

[0036] In this embodiment, as shown in the figure, Figures 2-4 The static contact 10 is installed on the first conductive connecting piece 22, the first conductive connecting piece 22 is clamped on the mounting table 14, the second end of the spring piece 9 is connected with the second conductive connecting piece 17, and the first conductive connecting piece 22 and the second conductive connecting piece 17 facilitate wiring of the spring piece 9 and the static contact 10, wherein the first conductive connecting piece 22 can be inserted into the corresponding electric connecting piece insertion groove 142 of the mounting table 14 from front to back, the upper portions of the first conductive connecting piece 22 and the second conductive connecting piece 17 are both obliquely provided with wiring ends, which facilitates wiring, and the first conductive connecting piece 22 is provided with limiting folded edges 221 on both sides of the wiring end, which clasp the upper edge of the electric connecting piece insertion groove 142 to fix the first conductive connecting piece 22.

[0037] In this embodiment, as shown in the figure, Figures 2-5As shown, the inside of the shell 1 is provided with a multi-cavity boss 11 near the lower part of the side of the rotating shaft 5, the multi-cavity boss 11 is provided with at least one hollow cavity 12, the first fixed block 13 is arranged in the hollow cavity 12, the second end of the second conductive connecting piece 17 and the elastic sheet 9 is connected and fixed with the first fixed block 13 through the first screw 18 passing through the side of the multi-cavity boss 11, the second fixed block 20 is also arranged in the hollow cavity 12, the mounting bracket 4 is arranged on the side of the shell 1, the mounting bracket 4 is connected and fixed with the second fixed block 20 through the second screw 21 passing through the side wall of the shell 1, the internal space of the shell 1 can be used to set more fixed structures by arranging the multi-cavity boss 11, and the overall strength of the shell 1 can be increased, the first screw 18 and the second screw 21 can be locked and fixed by using the first fixed block 13 and the second fixed block 20, and there is no need to arrange a threaded hole on the shell during processing. Wherein, a pair of positioning sliding grooves 111 are arranged side by side on the top of the multi-cavity boss 11 corresponding to the position of the second conductive connecting piece 17, and the second conductive connecting piece 17 is transversely slid into the positioning sliding groove 111 for forward and backward limiting.

[0038] As shown in Figures 4-5 , the end face of the shell 1 near the rotating shaft 5 is provided with a plug-in groove 24, and a wire guide block 23 is inserted into the plug-in groove 24, the wire guide block 23 can fix the connecting wire entering the shell 1, and can also seal the inside of the shell 1, the wire guide block 23 can be made of rubber material, which is beneficial to the sealing of the wire passing position.

[0039] In this embodiment, as shown in Figure 1 , 4 -5, the side wall and the top wall of the shell 1 are open, the detachable side plate 2 is arranged on the outside of the shell 1, the detachable side plate 2 covers and surrounds the open side wall and the top wall of the shell 1, which is convenient to detach the detachable side plate 2 to expose the internal structure of the whole shell 1, and is convenient for replacing and maintaining the parts, and is also convenient for assembling, the both ends of the detachable side plate 2 are provided with a buckle plate 28 extending to the side wall of the shell 1, the buckle plate 28 is provided with a buckle hole 29, the side wall of the shell 1 is provided with a limiting groove 32 matched with the buckle plate 28, and the limiting groove 32 is provided with a buckle block 26 used for buckling with the buckle hole 29, the positioning and inserting of the buckle plate 28 and the limiting groove 32 can ensure the sealing performance and firmness of the detachable side plate 2 after buckling with the shell 1, and the detachable side plate 2 is not easy to loosen.

[0040] In order to facilitate the installation of the detachable side plate 2, a frame groove 31 can be arranged on the upper side of the limiting groove 32, the depth of the frame groove 31 is less than the depth of the limiting groove 32, as shown in Figure 6As shown, when the detachable side plate 2 is installed, the buckle plate 28 is first inserted into the frame slot 31 transversely, at this time the buckle block 26 has not buckled with the buckle hole 29, first position the buckle plate 28, and then press the detachable side plate 2 downward, so that the buckle plate 28 slides downward into the limiting slot 32, such an assembly method is more reliable, and the damage to the buckle hole 29 and the buckle block 26 is less.

[0041] In addition, the detachable side plate 2 is made of transparent material, which facilitates observation of the working process of the internal components of the shell 1.

[0042] 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 posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0043] In addition, the descriptions such as "first", "second" and the like in the present application are 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 defined as "first", "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, for example, two, three, etc., unless otherwise specifically limited.

[0044] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

Claims

1. An elevator roller switch, comprising: a housing (1), the bottom of which is connected with a roller support (6) through a rotating shaft (5), both ends of the roller support (6) are provided with rollers (3), and the upper part of the end of the housing (1) away from the rotating shaft (5) is provided with a static contact (10), characterized in that: a spring (15) is vertically arranged in the housing (1), the lower end of the spring (15) is connected with a guide rod (7), the guide rod (7) is rotatably connected with one end of the roller support (6) through a guide hole (25) on the housing (1) in the vertical direction, and the middle part of the guide rod (7) is provided with a left-right through opening (71); a spring piece (9) transversely passes through the opening (71), the first end of the spring piece (9) is provided with a moving contact (8) for contacting the static contact (10), and the second end of the spring piece (9) is fixedly connected with the housing (1).

2. The elevator roller switch of claim 1, wherein: The end of the roller support (6) connected with the guide rod (7) is provided with a pin shaft (27), the lower end of the guide rod (7) is provided with a waist hole (76), and the pin shaft (27) passes through the waist hole (76).

3. The elevator roller switch of claim 1, wherein: The top of the guide rod (7) is provided with a spring positioning groove (73) corresponding to the spring (15), and the middle part of the spring positioning groove (73) is provided with a spring positioning column (75) protruding upward.

4. The elevator roller switch of claim 1, wherein: The side wall of the guide rod (7) is provided with a sliding guide structure matched with the inner side wall of the housing (1) and / or the inner side wall of the guide hole (25).

5. The elevator roller switch of claim 1, wherein: The inner side upper part of the housing (1) is provided with a mounting table (14), the spring positioning seat (16) corresponding to the spring (15) is mounted on the mounting table (14), the lower side of the spring positioning seat (16) is provided with a positioning inner cavity (161), and the upper end of the spring (15) extends into the positioning inner cavity (161).

6. The elevator roller switch of claim 5, wherein: The static contact (10) is mounted on a first conductive connecting piece (22), the first conductive connecting piece (22) is clamped on the mounting table (14), and the second end of the spring piece (9) is connected with a second conductive connecting piece (17).

7. The elevator roller switch of claim 6, wherein: The inner side of the housing (1) near the rotating shaft (5) is provided with a multi-cavity boss (11) at the lower part, at least one hollow cavity (12) is arranged in the multi-cavity boss (11), a first fixed block (13) and a second fixed block (20) are arranged in the hollow cavity (12), the second conductive connecting piece (17) and the second end of the spring piece (9) are connected with the first fixed block (13) through the first screw (18) passing through the side of the multi-cavity boss (11) for fixation, a mounting bracket (4) is mounted on one side of the housing (1), and the mounting bracket (4) is connected with the second fixed block (20) through the second screw (21) passing through the side wall of the housing (1) for fixation.

8. The elevator roller switch of claim 1, wherein: The upper side of the end face of the housing (1) near the rotating shaft (5) is provided with a plug-in groove (24), and a wire guide block (23) is inserted into the plug-in groove (24).

9. The elevator roller switch of claim 1, wherein: The side wall and the top wall of the shell (1) are open, and a detachable side plate (2) is mounted on the outside of the shell (1), which covers and surrounds the open side wall and the top wall of the shell (1).

10. The elevator roller switch of claim 9, wherein: Two ends of the detachable side plate (2) are provided with buckling plates (28) extending to the side wall of the shell (1), the buckling plates (28) are provided with buckling holes (29), and the side wall of the shell (1) is provided with limiting grooves (32) matched with the buckling plates (28), and the limiting grooves (32) are provided with buckle protrusions (26) buckled with the buckling holes (29).

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