CN212671408U - Elevator key and elevator hall door unlocking device - Google Patents

Abstract

The utility model relates to an elevator key and hoistway door unlocking device, elevator key include casing, key body and with this body coupling's of key head. The casing has and holds the cavity, and the key body is located and is held the cavity, and the key head is connected with the casing. The casing is equipped with gear portion and is used for realizing casing and body of rod swing joint's connecting portion, and gear portion is equipped with two at least, and gear portion is used for the cooperation to locate the locating component use of the body of rod. The connecting part and the at least two gear parts are arranged on the shell of the elevator key, so that the installation position of the elevator key can be flexibly adjusted, the application range of the elevator key is wide, and the elevator key is suitable for a door lock installed on a hoistway door, a door lock installed on the top of a hoistway door frame and the like, good in compatibility and convenient to use.

Description

Elevator key and elevator hall door unlocking device

Technical Field

The utility model relates to an elevator technical field especially relates to an elevator key and hoistway door unlocking device.

Background

The elevator key is a door opening tool commonly used by elevator maintainers, and is mainly used for opening elevator hall doors when an elevator breaks down and is overhauled. Conventionally, hoistway doors are provided with a triangular lock. The maintainer inserts the elevator key and sets up the triangulation chain at the hoistway door, unlocks through rotatory elevator key in order to the triangulation chain to unblank the hoistway door. However, the traditional elevator key cannot adjust the installation position, and has the disadvantages of narrow application range, poor compatibility and inconvenient use.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an elevator key and an elevator hall door unlocking device, which can adjust the installation position, and have the advantages of wide application range, good compatibility and convenient use.

An elevator key comprises a shell, a key body and a key head connected with the key body, wherein the shell is provided with an accommodating cavity, the key body is arranged in the accommodating cavity, and the key head is connected with the shell; the casing is equipped with gear portion and is used for realizing the body of rod with casing swing joint's connecting portion, gear portion is equipped with at least two, gear portion is used for the cooperation to locate the locating part of the body of rod uses.

Foretell elevator key through the swing joint of installation department in order to realize casing and the body of rod, makes the elevator key can rotate around the body of rod to adjust the installation position of elevator key, thereby make the elevator lock of different installation positions of elevator key adaptation nimble. When the elevator key rotates to the gear part, the gear part and the positioning part are matched to limit the relative movement of the elevator key and the rod body, so that the angle switching of the installation position of the elevator key is completed. After the installation position of the elevator key is switched, a moment is applied to the side part of the rod body to drive the elevator key to rotate, so that the elevator door lock can be unlocked. The connecting part and the at least two gear parts are arranged on the shell of the elevator key, so that the installation position of the elevator key can be flexibly adjusted, the application range of the elevator key is wide, and the elevator key is suitable for a door lock installed on a hoistway door, a door lock installed on the top of a hoistway door frame and the like, good in compatibility and convenient to use.

In one embodiment, the shift portion is a shift hole, and the number of the shift holes is three, namely a first shift hole, a second shift hole and a third shift hole; the first gear hole and the third gear hole are arranged on two sides of the surface of the shell, and the second gear hole is arranged in the middle of a semicircular track with the distance between the first gear hole and the third gear hole as the diameter.

In one embodiment, the housing is provided with a guide groove, and the gear position part is arranged at the bottom of the guide groove; the guide groove is a semicircular groove, or the guide groove is a circular groove.

An elevator hall door unlocking device comprises a rod body, a first connecting piece, a positioning part and the elevator key, wherein the first connecting piece is connected to the connecting part of the elevator key; the positioning part is arranged on the rod body and is matched with the gear part for use.

According to the elevator hall door unlocking device, the installation part is used for movably connecting the shell and the rod body, so that the elevator key can rotate around the rod body to adjust the installation position of the elevator key, and the elevator key can be flexibly matched with elevator door locks in different installation positions. When the elevator key rotates to the gear part, the gear part and the positioning part are matched to limit the relative movement of the elevator key and the rod body, so that the angle switching of the installation position of the elevator key is completed. After the installation position of the elevator key is switched, a moment is applied to the side part of the rod body to drive the elevator key to rotate, so that the elevator door lock can be unlocked. The connecting part and the at least two gear parts are arranged on the shell of the elevator key, so that the installation position of the elevator key can be flexibly adjusted, the application range of the elevator key is wide, and the elevator key is suitable for a door lock installed on a hoistway door, a door lock installed on the top of a hoistway door frame and the like, good in compatibility and convenient to use.

In one embodiment, the positioning component is a ball screw, and the shift portion is a shift hole.

In one embodiment, one end of the rod body is provided with a first mounting portion, the first mounting portion is provided with a first threaded hole, and the positioning component is in threaded connection with the first mounting portion through the first threaded hole.

In one embodiment, the first mounting portion is further provided with a through hole, the housing is correspondingly provided with a second threaded hole, and the first connecting piece is inserted into the through hole and the second threaded hole and is in threaded connection with the housing.

In one embodiment, the number of the rod bodies is at least two, wherein one end of one rod body is provided with a second mounting part, and one end of the other rod body is provided with a third mounting part; the elevator hall door unlocking device further comprises a second connecting piece and a locking assembly used for locking the second installation part and the third installation part, and the second installation part is movably connected with the third installation part through the second connecting piece.

In one embodiment, the locking assembly includes a first locking member and a second locking member, the first locking member is disposed on the second mounting portion, the second locking member is disposed on the third mounting portion, and the second locking member is provided with a connecting hook groove adapted to the first locking member.

In one embodiment, the locking assembly further comprises a mounting member rotatably provided to the third mounting portion, and the second locking member is connected to the mounting member.

In one embodiment, when two adjacent rod bodies are in a straightened state, the end part of the second mounting part is pressed against the mounting part.

Drawings

Fig. 1 is a schematic structural view of an elevator key according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating a process of changing installation positions of an elevator key according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;

fig. 4 is a schematic structural view of the hoistway door unlocking apparatus according to the embodiment of the present invention in an expanded state;

fig. 5 is a schematic structural view of the hall door unlocking apparatus shown in fig. 4 in a folded state;

fig. 6 is a schematic structural view of an elevator hall door unlocking apparatus according to another embodiment of the present invention in an expanded state;

fig. 7 is a schematic structural view of the hall door unlocking apparatus shown in fig. 6 in a folded state;

fig. 8 is a schematic view showing a process of the hoistway door unlocking apparatus according to the embodiment of the present invention from the folded state to the extended state.

10. The key comprises a shell, 11, a first shell, 12, a second shell, 13, a connecting part, 14, a gear part, 141, a first gear hole, 142, a second gear hole, 143, a third gear hole, 15, a guide groove, 20, a key body, 30, a key head, 40, a rod body, 41, a first installation part, 42, a second installation part, 43, a third installation part, 50, a first connecting piece, 60, a positioning part, 70, a locking component, 71, a first locking piece, 72, a second locking piece, 721, a connecting hook groove, 73, an installation part, 80 and a second connecting piece.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 3, an elevator key in an embodiment includes a housing 10, a key body 20, and a key head 30 connected to the key body 20. The housing 10 has a receiving cavity, the key body 20 is disposed in the receiving cavity, and the key head 30 is connected to the housing 10. The shell 10 is provided with at least two gear portions 14 and a connecting portion 13 for movably connecting the shell 10 with the rod 40, and the gear portions 14 are used for being matched with the positioning component 60 arranged on the rod 40.

According to the elevator key, the shell 10 is movably connected with the rod body 40 through the connecting part 13, so that the elevator key can rotate around the rod body 40 to adjust the installation position of the elevator key, and the elevator key can be flexibly matched with elevator door locks in different installation positions. When the elevator key is rotated to the position of the position stop 14, the position stop 14 cooperates with the positioning member 60 to limit the relative movement of the elevator key and the rod 40, so as to complete the angular switching of the installation position of the elevator key. After the installation position of the elevator key is switched, a moment is applied to the side of the rod body 40 to drive the elevator key to rotate, so that the elevator door lock can be unlocked. The connecting part 13 and at least two gear parts 14 are arranged on the shell 10 of the elevator key, so that the installation position of the elevator key can be flexibly adjusted, the application range of the elevator key is wide, and the elevator key is suitable for a door lock installed on a hoistway door, a door lock installed on the top of a door frame of the hoistway door and the like, has good compatibility and is convenient to use.

Specifically, the connecting portion 13 is a connecting hole. Optionally, the connection portion 13 is a threaded hole. The rod body 40 is correspondingly provided with a through hole, a screw is inserted into the through hole of the rod body 40 and the threaded hole of the shell, and the screw is in threaded connection with the shell 10, so that the movable connection between the elevator key and the rod body 40 can be realized.

In one embodiment, referring to fig. 1 to 3, the shift portion 14 is a three-shift-hole structure, which is a first shift-hole 141, a second shift-hole 142 and a third shift-hole 143. The first gear hole 141 and the third gear hole 143 are disposed on two sides of the surface of the housing, and the second gear hole 142 is disposed in the middle of a semicircular track having a diameter equal to the distance between the first gear hole 141 and the third gear hole 143. It should be understood that the semicircular track is obtained by taking the center line of the first and third shift holes 141 and 143 as a diameter, and the second shift hole 142 is located at the middle of the semicircular track.

Please refer to fig. 1 to 3, the first gear hole 141 is a 0 ° installation position, the second gear hole 142 is a 90 ° installation position, and the third gear hole 143 is a 180 ° installation position. Generally, an elevator door lock is a triangular lock, and a triangular column in a lock hole can be a regular triangle or an inverted triangle. It is understood that a regular triangle refers to a triangle with the base below, and an inverted triangle refers to a triangle with the base above. In order to enable the elevator key to be flexibly adapted to the elevator door locks at different installation positions, the shell 10 is provided with a connecting part 13 so as to realize the movable connection between the elevator key and the rod body 40; the housing 10 is provided with a first gear hole 141 and a third gear hole 143. In the using process, if the triangular column in the lock hole is in a regular triangle shape and the triangular hole of the key head 30 is in an inverted triangle shape, the elevator key is rotated by 180 degrees, so that the triangular hole of the key head 30 is changed from the inverted triangle shape to the regular triangle shape. Meanwhile, the positioning member 60 provided to the lever 40 is positioned at the first or third shift hole 141 or 143 to restrict the relative rotation of the elevator key and the lever 40, so that the hall door can be opened using the elevator key. In addition, the housing 10 is provided with a second position-changing hole 142, and when the elevator door lock is installed on a beam at the top of the door frame of the hoistway door, that is, when the locking hole of the elevator door lock faces the ground, the elevator key is rotated such that the positioning member 60 is positioned in the second position-changing hole 142 to restrict the relative rotation of the elevator key and the rod body 40; the rod body 40 is rotated to drive the elevator key to rotate together for unlocking.

Further, referring to fig. 1 and 3, a guide slot 15 is formed on a surface of the housing 10, and the stopper portion 14 is disposed at a bottom of the guide slot 15. Specifically, the guide groove 15 is a semicircular groove, or the guide groove 15 is a circular groove. When the installation position of the elevator key needs to be adjusted, the positioning member 60 is retreated from the gear part 14, and the elevator key is rotated, so that the positioning member 60 moves along the guide groove 15 until the other gear part 14 is moved and positioned. By arranging the guide groove 15 on the surface of the housing 10, the guide groove 15 plays a role in guiding, so that the positioning member 60 moves in the guide groove 15, and unstable phenomena such as offset and the like of the positioning member 60 in the moving process are avoided.

Specifically, referring to fig. 1, the guiding groove 15 is a semicircular groove, and the semicircular groove is disposed on the outer surface of the housing 10. The first gear hole 141 is formed at one end of the semicircular groove, the second gear hole 142 is formed at the middle of the semicircular groove, and the third gear hole 143 is formed at the other end of the semicircular groove.

In one embodiment, referring to fig. 3, the housing 10 includes a first housing 11 and a second housing 12, wherein one end of the first housing 11 is provided with a first fastening position, the second housing 12 is correspondingly provided with a second fastening position, the key head 30 can be clamped by the first fastening position and the second fastening position, and the first housing 11 and the second housing 12 are locked by screws. Moreover, one end of the shell 10 is provided with a sound outlet, and the other end of the shell 10 is provided with a USB charging port.

Specifically, in the present embodiment, the connecting portion 13, the shift portion 14 and the guide groove 15 are disposed on the surfaces of the first housing 11 and the second housing 12, and the connecting portion 13, the shift portion 14 and the guide groove 15 on the surface of the first housing 11 are disposed corresponding to the connecting portion 13, the shift portion 14 and the guide groove 15 on the surface of the second housing 12.

Referring to fig. 2 and 4, an embodiment of the hoistway door unlocking apparatus includes a lever 40, a first connecting member 50, a positioning member 60, and an elevator key according to any of the above embodiments. The first connecting member 50 is connected to the connecting portion 13 of the elevator key, and the elevator key is movably connected to the rod 40 through the first connecting member 50. The positioning member 60 is disposed on the rod 40, and the positioning member 60 is used in cooperation with the stopper portion 14.

In the elevator hall door unlocking device, the shell 10 is movably connected with the rod body 40 through the first connecting piece 50, so that the elevator key can rotate around the rod body 40 to adjust the installation position of the elevator key, and the elevator key can be flexibly adapted to elevator door locks with different installation positions. When the elevator key is rotated to the position of the position stop 14, the position stop 14 cooperates with the positioning member 60 to limit the relative movement of the elevator key and the rod 40, so as to complete the angular switching of the installation position of the elevator key. After the installation position of the elevator key is switched, a moment is applied to the side of the rod body 40 to drive the elevator key to rotate, so that the elevator door lock can be unlocked. The connecting part 13 and at least two gear parts 14 are arranged on the shell 10 of the elevator key, so that the installation position of the elevator key can be flexibly adjusted, the application range of the elevator key is wide, and the elevator key is suitable for a door lock installed on a hoistway door, a door lock installed on the top of a door frame of the hoistway door and the like, has good compatibility and is convenient to use.

In one embodiment, the positioning member 60 is a ball screw and the stopper portion 14 is a stopper hole. Specifically, the wave pearl screw includes screw body, elastic component and location pearl, and the screw body is equipped with along the axial guiding hole of screw body, and in the guiding hole was located to the elastic component, the drill way in guiding hole was installed to the location pearl. When the installation position of the elevator key needs to be adjusted, the elevator key is rotated, the positioning balls of the wave ball screws retract into the guide holes, and the elastic piece is in a compressed state. When the elevator key rotates to another gear hole, the positioning balls are ejected out of the guide holes to the gear holes under the action of elastic force, so that the angle switching of the installation position of the elevator key can be realized.

In one embodiment, referring to fig. 1, 3 and 4, a first mounting portion 41 is disposed at one end of the rod 40, the first mounting portion 41 has a first threaded hole, and the positioning member 60 is threadedly coupled to the first mounting portion 41 through the first threaded hole, such that the positioning member 60 can move in the guide slot 15 and be positioned at the stopper portion 14.

Further, referring to fig. 1, fig. 3 and fig. 4, the first mounting portion 41 is further provided with a through hole, the housing 10 is correspondingly provided with a second threaded hole, and the first connecting member 50 is inserted into the through hole and the second threaded hole and is in threaded connection with the housing 10, so as to realize the movable connection between the elevator key and the rod 40. Realize being connected of elevator key and body of rod 40 through this structure, can adjust the installation position of elevator key like this, make the use of this elevator key more nimble, satisfy different user demands.

Specifically, in the present embodiment, please refer to fig. 3, the first mounting portion 41 is a U-shaped structure, the elevator key is disposed in a space formed by the U-shaped structure, and the first housing 11 and the second housing 12 of the elevator key are both connected to the first mounting portion 41.

In one embodiment, referring to fig. 4, 5 and 8, the lever body 40 is a folding lever. Specifically, at least two rods 40 are provided, wherein one end of one rod 40 is provided with a second mounting portion 42, and one end of the other rod 40 is provided with a third mounting portion 43. The unlocking apparatus for the hoistway door further includes a locking assembly 70 and a second link 80, and the second mounting portion 42 and the third mounting portion 43 are movably coupled by the second link 80. The locking assembly 70 includes a first locking member 71 and a second locking member 72, the first locking member 71 is disposed on the second mounting portion 42, the second locking member 72 is disposed on the third mounting portion 43, and the second locking member 72 has a connecting hook slot 721 matched with the first locking member 71. When one of the rods 40 rotates around the second connecting member 80 and two adjacent rods 40 are in the straightened state, the second locking member 72 is rotated, so that the first locking member 71 is engaged with the connecting hook slot 721 of the second locking member 72, thereby locking two adjacent rods 40. When the rod 40 needs to be folded, the second locking member 72 is rotated in the opposite direction to disengage the first locking member 71 from the hooking slot 721 of the second locking member 72, so that the rod 40 can rotate around the second connecting member 80 to fold the rod 40.

When the elevator breaks down or needs maintenance, because the mounted position of elevator lock is higher, the maintainer can't reach the elevator lock. At this time, the rod body 40 of the elevator hall door unlocking device can be straightened and locked, and the elevator hall door unlocking device is used for opening the elevator hall door, so that a maintainer does not need to stand on tiptoe to screw the elevator door lock, and the safety accident is avoided. After the elevator hall door is opened to the maintainer, the body of rod 40 is folded, and the body of rod 40 length after folding diminishes, is convenient for put into the saddlebag, conveniently carries like this.

The second mounting portion 42 and the third mounting portion 43 may be integrally formed with the rod 40, or may be separate components, and the second mounting portion 42 and the third mounting portion 43 are connected to the end of the rod 40 by welding.

In one embodiment, referring to fig. 4, 5 and 8, the locking assembly 70 further includes a mounting member 73, the mounting member 73 is rotatably disposed on the third mounting portion 43, and the second locking member 72 is connected to the mounting member 73. Specifically, the third mounting part 43 is provided with a plugging hole through which the mounting part 73 passes, and the mounting part 73 can rotate within the plugging hole; the second locking member 72 is connected to the mounting member 73, and the second locking member 72 can be rotated by rotating the mounting member 73. It will be appreciated that second locking member 72 is fixedly attached to mounting member 73. When two adjacent rod bodies 40 are in the straightened state, the mounting part 73 is rotated clockwise, the second locking part 72 moves to one side close to the first locking part 71, so that the connecting hook groove 721 of the second locking part 72 is contacted with the first locking part 71, and the first locking part 71 is clamped in the connecting hook groove 721 of the second locking part 72, so that the two adjacent rod bodies 40 in the straightened state can be locked, and at the moment, the rod bodies 40 cannot be folded. When the rod 40 needs to be folded, the mounting part 73 is rotated counterclockwise, the second locking member 72 moves to a side away from the first locking member 71, so that the hook slot 721 of the second locking member 72 is disengaged from the first locking member 71, and thus the rod 40 can rotate around the connecting member to fold the rod 40.

In the embodiment, the second locking member 72 is welded to the middle of the mounting member 73, and the second locking member 72 can be rotated by rotating the mounting member 73.

Further, referring to fig. 4, 5 and 8, when two adjacent rods 40 are in the extended state, the end of the second mounting portion 42 is pressed against the mounting portion 73. It will be appreciated that the second mounting portion 42 of one of the rods 40 partially overlaps the third mounting portion 43 of the other rod 40. Because the tip of second installation department 42 supports and presses in installed part 73, installed part 73 can play spacing effect, and two adjacent body of rod 40 can't continue to rotate after straightening like this, so second connecting piece 80 can not promote second locking piece 72 anticlockwise rotation, can avoid first locking piece 71 to break away from the coupler slot 721 of second locking piece 72 like this to guarantee the stability of folding rod structure under the state of straightening.

Further, the end of the mounting member 73 is provided with an elastic washer, which can play a role of preventing looseness, so that the first locking member 71 can be prevented from being disengaged from the coupling hook slot 721 of the second locking member 72, thereby ensuring the structural stability of the folding bar in the straightened state.

In the present embodiment, the mounting member 73 is a thumb screw. Of course, in other embodiments, the mounting member 73 can be a rivet, a pin, etc., without limitation.

In one embodiment, referring to fig. 4, 5 and 8, the second connecting member 80 is disposed on the third mounting portion 43, the second mounting portion 42 is correspondingly disposed with a mounting hole, and one of the rods 40 is rotatably mounted on the second connecting member 80 through the mounting hole. Alternatively, the second connecting member 80 is a rivet, and the second connecting member 80 is riveted to the third mounting portion 43. By providing the second connecting member 80 on the third mounting portion 43, it is easy to connect the second mounting portion 42 and the third mounting portion 43 on the one hand, so as to connect two adjacent rods 40; on the other hand, two adjacent rods 40 can freely rotate around the connecting piece, so as to realize two states of straightening, locking and folding the rods 40.

In one embodiment, referring to fig. 4, 5 and 8, two second mounting portions 42 are provided, and the two second mounting portions 42 are disposed opposite to each other. The number of the third mounting portions 43 is two, the two third mounting portions 43 are spaced and arranged oppositely, and the second mounting portion 42 is inserted into a space formed by the two third mounting portions 43. It will be appreciated that the second mounting portion 42 is U-shaped, the third mounting portion 43 is also U-shaped, and the second mounting portion 42 is smaller in size than the third mounting portion 43 so that the second mounting portion 42 can be inserted into the space formed by the third mounting portion 43. Through setting up two second installation departments 42 and two third installation departments 43, be favorable to improving the fastness and the stability that two adjacent body of rod 40 are connected like this to can guarantee that two adjacent body of rod 40 are in the stability under the state of straightening, the folding of the body of rod 40 of also being convenient for simultaneously.

Please refer to fig. 6 and 7, the number of the rod bodies 40 may be more than three, so as to lengthen the length of the folding rod, thereby meeting different requirements. The connection structure between two adjacent rods 40 is the same, but the folding direction needs to be changed alternately in turn. The folding lever of the three-link body 40 is taken as an example for explanation: the middle rod 40 remains stationary, the rod 40 connected to one end of the middle rod 40 is folded to the left, the rod 40 connected to the other end of the middle rod 40 is folded to the right, and the mounting part 73 and the second connecting part 80 between the middle rod 40 and the rod 40 on the left side thereof and the mounting part 73 and the second connecting part 80 between the middle rod 40 and the rod 40 on the right side thereof are correspondingly symmetrically arranged.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (11)

1. An elevator key is characterized by comprising a shell, a key body and a key head connected with the key body, wherein the shell is provided with an accommodating cavity, the key body is arranged in the accommodating cavity, and the key head is connected with the shell; the casing is equipped with gear portion and is used for realizing the body of rod with casing swing joint's connecting portion, gear portion is equipped with at least two, gear portion is used for the cooperation to locate the locating part of the body of rod uses.

2. The elevator key of claim 1, wherein the shift portion is a shift hole, and the number of shift holes is three, namely a first shift hole, a second shift hole and a third shift hole; the first gear hole and the third gear hole are arranged on two sides of the surface of the shell, and the second gear hole is arranged in the middle of a semicircular track with the distance between the first gear hole and the third gear hole as the diameter.

3. The elevator key according to claim 1 or 2, wherein the housing is provided with a guide groove, and the shift position portion is provided at a bottom of the guide groove; the guide groove is a semicircular groove, or the guide groove is a circular groove.

4. An elevator hall door unlocking device, which is characterized by comprising a rod body, a first connecting piece, a positioning part and an elevator key according to any one of claims 1 to 3, wherein the first connecting piece is connected to the connecting part of the elevator key, and the elevator key is movably connected with the rod body through the first connecting piece; the positioning part is arranged on the rod body and is matched with the gear part for use.

5. The hoistway door unlocking apparatus of claim 4, wherein the positioning member is a ball screw, and the stopper portion is a stopper hole.

6. The hoistway door unlocking apparatus of claim 4, wherein a first mounting portion is provided at one end of the lever body, the first mounting portion is provided with a first threaded hole, and the positioning member is threadedly coupled to the first mounting portion through the first threaded hole.

7. The device as claimed in claim 6, wherein the first mounting portion further has a through hole, the housing has a second screw hole, and the first connecting member is inserted into the through hole and the second screw hole and is screw-coupled to the housing.

8. The hoistway door unlocking apparatus of claim 4, wherein the rod bodies are provided with at least two, one of the rod bodies is provided with a second mounting portion at one end thereof, and the other of the rod bodies is provided with a third mounting portion at one end thereof; the elevator hall door unlocking device further comprises a second connecting piece and a locking assembly used for locking the second installation part and the third installation part, and the second installation part is movably connected with the third installation part through the second connecting piece.

9. The device as claimed in claim 8, wherein the locking assembly comprises a first locking member and a second locking member, the first locking member is disposed on the second mounting portion, the second locking member is disposed on the third mounting portion, and the second locking member has a coupling hook slot adapted to the first locking member.

10. The hoistway door unlocking apparatus of claim 9, wherein the locking assembly further comprises a mounting member rotatably provided at the third mounting portion, and the second locking member is coupled to the mounting member.

11. The hoistway door unlocking apparatus of claim 10, wherein when two adjacent bars are in a straightened state, the end of the second mounting portion is pressed against the mounting member.

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