Latch bolt, latch bolt assembly and lock body

Abstract

The utility model discloses a latch bolt, a latch bolt assembly and a lock body, the latch bolt is provided with a first rotating axis, a first position, a second position, a first working face and a second working face, and the first working face and the second working face are obliquely arranged; the side part of the latch bolt is provided with a first limiting surface and a second limiting surface; when the latch bolt is in the first position and the locking block is in the locking position, the locking block makes contact with the first limiting face, and the latch bolt is limited to be kept in the first position when moving. And when the latch bolt is at the second position and the locking block is at the locking position, the locking block is in contact with the second limiting surface, and the latch bolt is limited to be kept at the second position during movement. The latch bolt can rotate around the first rotating axis, and through the arrangement of the first working face, the second working face, the first limiting face and the second limiting face, under the cooperation with the locking block of the lock body, switching of two installation directions can be conveniently achieved under the condition that the latch bolt is not detached or replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lockset, concretely relates to a latch, a latch assembly and a lock body. BACKGROUND

[0002] The lock body comprises a lock shell and a latch movably arranged on the lock shell, and the existing latch generally has a first side wall substantially parallel to the bottom wall of the lock shell and an inclined side wall obliquely arranged with the first side wall. When the door is closed, the door frame contacts the inclined side wall, which can drive the latch to be pressed into the latch. This structure of the latch causes the lock body to have a direction during installation. When it is necessary to install in the opposite direction, the lock body or the latch needs to be replaced. SUMMARY

[0003] The utility model discloses a latch, a latch assembly and a lock body to overcome at least one of the above problems.

[0004] The utility model discloses the technical scheme as follows:

[0005] A latch is used for being installed on a lock body, the lock body has a movable locking block, the locking block has an unlocking position and a locking position, the latch has a first rotation axis, the latch has a first position and a second position, and the latch rotates a set angle around the first rotation axis in the second position relative to the first position.

[0006] The side of the latch has a limiting portion, the limiting portion has a first limiting surface and a second limiting surface, and the limiting portion is used for cooperating with the locking block.

[0007] When the latch is in the first position and the locking block is in the locking position, the locking block contacts the first limiting surface, and the latch is limited to remain in the first position when being moved.

[0008] When the latch is in the second position and the locking block is in the locking position, the locking block contacts the second limiting surface, and the latch is limited to remain in the second position when being moved.

[0009] The bevelled tongue has a first rotation axis, which means that the bevelled tongue can rotate around the first rotation axis, so that the angle of the bevelled tongue (a first position and a second position) can be adjusted, and the switching of the two installation directions can be realized, that is, when the locking block is in the unlocking position, the bevelled tongue can rotate after being pressed, so that the switching of the first position and the second position is realized. When the bevelled tongue is used as the first installation direction, the bevelled tongue is in the first position, and when the locking block is in the locking position, the locking block is in contact with the first limiting surface, so that the bevelled tongue is limited to remain in the first position when being active. At this time, the second working surface is inclined relative to the door frame, and the second working surface cooperates with the door frame when the door is closed. Under the reaction force of the door frame, the bevelled tongue can slide into the lock body and retract the lock body. When the bevelled tongue is used as the second installation direction, the bevelled tongue is in the second position, and when the locking block is in the locking position, the locking block is in contact with the second limiting surface, so that the bevelled tongue is limited to remain in the second position when being active. At this time, the first working surface is inclined relative to the door frame, and the first working surface cooperates with the door frame when the door is closed. Under the reaction force of the door frame, the bevelled tongue can slide into the lock body and retract the lock body.

[0010] The bevelled tongue of the present application can rotate around the first rotation axis. Through the arrangement of the first working surface, the second working surface, the first limiting surface and the second limiting surface, the switching of the two installation directions can be realized without dismounting and replacing the bevelled tongue.

[0011] The limiting part in the present application can have various shapes, and can be a protrusion or a notch.

[0012] In one embodiment of the present application, the first rotation axis is parallel to the first working surface and the second working surface; the first limiting surface is a flat surface or an arc surface; and the second limiting surface is a flat surface or an arc surface.

[0013] In one embodiment of the present application, the first limiting surface is a flat surface and is inclinedly arranged with the second working surface; and the second limiting surface is a flat surface and is inclinedly arranged with the first working surface.

[0014] In one embodiment of the present application, the first limiting surface is parallel to the first working surface, and the second limiting surface is parallel to the second working surface.

[0015] In one embodiment of the present application, the limiting part is a protrusion, and the first limiting surface and the second limiting surface are formed on the side wall of the protrusion.

[0016] The present application also discloses a bevelled tongue assembly for being installed on a lock body, wherein the lock body comprises a lock shell, and the bevelled tongue assembly comprises:

[0017] A bevelled tongue plate is arranged on the lock shell in a movable manner.

[0018] The latch tongue is rotatably installed on the latch tongue plate, and the latch tongue can rotate relative to the latch tongue plate about a first rotation axis to switch between a first position and a second position.

[0019] The locking block is movably arranged on the lock shell, and has an unlocking position and a locking position.

[0020] In actual use, the locking block is moved to the unlocking position, so that the latch tongue can rotate about the first rotation axis (i.e., the rotation axis of the latch tongue and the latch tongue plate) to realize switching of the installation direction.

[0021] In one embodiment of the utility model, when the latch tongue is in the first position and the locking block is in the locking position, the locking block contacts the first limiting surface to limit the latch tongue to remain in the first position when being moved.

[0022] The locking block is movably arranged on the lock shell, or the locking block is rotatably arranged on the lock shell.

[0023] In one embodiment of the utility model, the locking block is movably arranged on the lock shell, and the locking block has a matching hole.

[0024] In one embodiment of the utility model, the latch tongue assembly further comprises a locking block reset elastic member and a latch tongue plate reset elastic member.

[0025] The latch tongue plate reset elastic member cooperates with the latch tongue or the latch tongue plate to make the latch tongue and the latch tongue plate have a moving trend of moving outward of the lock shell.

[0026] The application also discloses a lock body comprising a lock shell and the latch bolt assembly described above.

[0027] The lock shell is arranged on a door, and the latch bolt is arranged on a door frame and cooperates with a strike plate.

[0028] When the latch bolt is in the first position and the locking block is in the locking position, the locking block is in contact with the first limiting surface, so that the latch bolt is limited to keep in the first position, and the second working surface is arranged to be inclined to the movable direction of the latch bolt, and the second working surface is used for cooperating with the strike plate; when the latch bolt is in the first position and extends into the strike plate, the strike plate can drive the latch bolt to rotate and retract into the lock shell after the locking block is in the unlocking position.

[0029] When the latch bolt is in the second position and the locking block is in the locking position, the locking block is in contact with the second limiting surface, so that the latch bolt is limited to keep in the second position, and the first working surface is arranged to be inclined to the movable direction of the latch bolt, and the first working surface is used for cooperating with the strike plate; when the latch bolt is in the second position and extends into the strike plate, the strike plate can drive the latch bolt to rotate and retract into the lock shell after the locking block is in the unlocking position.

[0030] The application has the beneficial effect that the latch bolt can rotate around the first rotation axis, and through the arrangement of the first working surface, the second working surface, the first limiting surface and the second limiting surface, the two installation directions can be switched conveniently without removing and replacing the latch bolt. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic view of the latch bolt;

[0032] Figure 2 is a schematic view of the latch bolt from another angle;

[0033] Figure 3 is a schematic view of another latch bolt;

[0034] Figure 4 is a schematic view of the locking member in the unlocking position after the door is opened;

[0035] Figure 5 is a schematic view of the latch bolt in the first position and the locking member in the locking position during the door closing process;

[0036] Figure 6 is a schematic view of the latch bolt in the first position and the locking member in the locking position after the door is closed;

[0037] Figure 7is a schematic view of the door after being closed when the locking tongue is in the second position and the locking member is in the locking position in different installation directions;

[0038] Figure 8 is Figure 7 is a schematic view of another angle after the hidden part structure is hidden;

[0039] Figure 9 is a structure schematic view of the locking member slidingly arranged on the lock shell.

[0040] The reference signs in the drawings are as follows:

[0041] 1, latch tongue; 11, first working surface; 12, second working surface; 13, first rotation axis; 14, limiting part; 141, first limiting surface; 142, second limiting surface; 2, locking block; 21, matching hole; 3, latch tongue plate; 4, rotating member; 5, lock shell; 6, buckling plate; 7, locking block reset elastic member; 8, latch tongue plate reset elastic member. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the drawings in the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0043] In the description of the present application, it should be noted that the directions or position relationships indicated by the terms “inner”, “outer” and the like are based on the directions or position relationships shown in the drawings, or the directions or position relationships commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as limiting the present application. In addition, the terms “first”, “second” and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms “arranged”, “connected” should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0045] The present utility model will be described in detail below in combination with the drawings.

[0046] As Figures 4 to 8As shown, this embodiment discloses a lock body, including a lock shell 5 and a latch assembly mounted on the lock body.

[0047] like Figures 4 to 8 As shown, the latch assembly of this embodiment includes a latch plate 3, a latch 1, and a locking block 2. The locking block 2 is mounted on the lock body and is movable. The locking block 2 has an unlock position and a locked position.

[0048] like Figure 1 and 2 As shown, the oblique tongue 1 has a first rotation axis 13, and the oblique tongue 1 has a first position and a second position. When the oblique tongue 1 is in the second position, it rotates around the first rotation axis 13 by a set angle relative to the first position. The oblique tongue 1 has a first working surface 11 and a second working surface 12, and the first working surface 11 and the second working surface 12 are inclined.

[0049] The side of the tongue 1 has a limiting part 14, which has a first limiting surface 141 and a second limiting surface 142. The limiting part 14 is used to cooperate with the locking block 2. When the locking block 2 is in the locked position, it can limit the tongue to be in the first position or the second position when it is active.

[0050] When the oblique tongue 1 is in the first position and the locking block 2 is in the locked position, the locking block 2 contacts the first limiting surface 141, limiting the oblique tongue 1 to remain in the first position during movement;

[0051] When the oblique tongue 1 is in the second position and the locking block 2 is in the locked position, the locking block 2 contacts the second limiting surface 142, limiting the oblique tongue 1 to remain in the second position during movement.

[0052] In practical applications, the limiting part 14 can be of various shapes. Figure 1 For triangles, Figure 3 It can be circular and can be a protrusion or a recess, etc. In this embodiment, the limiting part 14 is a protrusion, and the first limiting surface 141 and the second limiting surface 142 are formed on the side wall of the protrusion. This configuration makes the structure simpler and reduces the processing cost.

[0053] In this embodiment, the first rotation axis 13 is parallel to the first working surface 11 and the second working surface 12; the first limiting surface 141 is a straight surface and is inclined to the second working surface 12; the second limiting surface 142 is a straight surface and is inclined to the first working surface 11. Preferably, in this embodiment, the first limiting surface 141 is parallel to the first working surface 11, and the second limiting surface 142 is parallel to the second working surface 12.

[0054] In practical application, see Figure 3 At least one of the first limiting surface 141 or the second limiting surface 142 can be a curved surface. Figure 3 Both of them are curved surfaces.

[0055] As Figures 3 to 8 shown, the latch plate 3 of the latch assembly is movably arranged on the lock housing 5, and the latch 1 is rotatably arranged on the latch plate 3, and the latch 1 can rotate relative to the latch plate 3 about the first rotation axis 13 to switch between the first position and the second position.

[0056] The locking block 2 is movably arranged on the lock housing 5, and the locking block 2 has an unlocking position and a locking position. When the locking block 2 is in the unlocking position, the latch bolt can rotate to switch positions. When the latch 1 is in the first position and the locking block 2 is in the locking position, the locking block 2 is in contact with the first limiting surface 141 to limit the latch 1 to remain in the first position when it is movable. At this time, the second working surface 12 is inclined relative to the movable direction of the latch 1, and the movable direction of the latch 1 is parallel to the first working surface 11. When the latch 1 is in the second position and the locking block 2 is in the locking position, the locking block 2 is in contact with the second limiting surface 142 to limit the latch 1 to remain in the second position when it is movable. At this time, the first working surface 11 is inclined relative to the movable direction of the latch 1, and the movable direction of the latch 1 is parallel to the second working surface 12.

[0057] The latch 1 has a first rotation axis 13, which means that the latch 1 can rotate about the first rotation axis 13 to adjust the angle of the latch 1 (first position and second position) and switch between the two installation directions. That is, when the locking block 2 is in the unlocking position, the latch 1 can rotate after being pressed to switch between the first position and the second position. When the latch 1 is used as the first installation direction, the latch 1 is in the first position, and when the locking block 2 is in the locking position, the locking block 2 is in contact with the first limiting surface 141 to limit the latch 1 to remain in the first position when it is movable. At this time, the second working surface 12 is inclined relative to the door frame, and the second working surface 12 cooperates with the door frame when the door is closed. Under the reaction force of the door frame, the latch 1 can slide into the lock body and retract into the lock body. When the latch 1 is used as the second installation direction, the latch 1 is in the second position, and when the locking block 2 is in the locking position, the locking block 2 is in contact with the second limiting surface 142 to limit the latch 1 to remain in the second position when it is movable. At this time, the first working surface 11 is inclined relative to the door frame, and the first working surface 11 cooperates with the door frame when the door is closed. Under the reaction force of the door frame, the latch 1 can slide into the lock body and retract into the lock body.

[0058] The latch 1 of the present application can rotate about the first rotation axis 13, and through the arrangement of the first working surface 11, the second working surface 12, the first limiting surface 141, and the second limiting surface 142, in cooperation with the locking block 2 of the lock body, the two installation directions can be switched more conveniently without dismounting or replacing the latch 1.

[0059] In actual use, the locking block 2 is moved to the unlocking position, and the latch 1 can rotate about the first rotation axis 13 (i.e. the rotation axis of the latch 1 and the latch plate 3), and the rotation of the latch 1 can realize the switching action of adapting to different installation directions. After the switching is completed, the locking block 2 is moved to cooperate with the corresponding limiting surface, and the switching of the installation direction is completed.

[0060] As shown in Figures 3 to 8 , in actual use, the locking block 2 can be rotatably arranged on the lock shell 5.

[0061] In actual use, the locking block 2 can be slidably arranged on the lock shell 5. A specific structure is shown in Figure 9 , the locking block 2 has a matching hole 21, the latch assembly further comprises a rotating piece 4 rotatably arranged on the lock shell 5, one end of the rotating piece 4 extends into the matching hole 21, and the part of the rotating piece 4 extending into the matching hole 21 has a gap with the matching hole 21. When the rotating piece 4 rotates, it can drive the locking block 2 to slide and switch the position of the locking block 2.

[0062] As shown in Figures 3 to 8 , in the embodiment, the latch assembly further comprises a locking block reset elastic piece 7 and a latch plate reset elastic piece 8. The locking block reset elastic piece 7 directly or indirectly cooperates with the locking block 2, and is used to make the locking block 2 have a state of being kept in the locking position.

[0063] The latch plate reset elastic piece 8 cooperates with the latch 1 or the latch plate 3, and is used to make the latch 1 and the latch plate 3 have a moving trend of moving outwardly from the lock shell 5.

[0064] The lock shell 5 of the lock body of the embodiment is used to be installed on a door, and the latch 1 is used to cooperate with a clamping plate 6 installed on a door frame.

[0065] When the latch 1 is in the first position and the locking block 2 is in the locking position, the locking block 2 is in contact with the first limiting surface 141, and the first limiting surface 141 is used to limit the latch 1 to be kept in the first position when the latch 1 moves. At this time, the second working surface 12 is arranged to be inclined relative to the movable direction of the latch 1, and the second working surface 12 is used to cooperate with the clamping plate 6. When the latch 1 is in the first position and extends into the clamping plate 6, after the locking block 2 is in the unlocking position, the clamping plate 6 can make the latch 1 rotate and retract into the lock shell 5 when the door is pushed.

[0066] When the latch 1 is in the second position and the locking block 2 is in the locking position, the locking block 2 is in contact with the second limiting surface 142, and the second limiting surface 142 is used to limit the latch 1 to be kept in the second position when the latch 1 moves. At this time, the first working surface 11 is arranged to be inclined relative to the movable direction of the latch 1, and the first working surface 11 is used to cooperate with the clamping plate 6. When the latch 1 is in the second position and extends into the clamping plate 6, after the locking block 2 is in the unlocking position, the clamping plate 6 can make the latch 1 rotate and retract into the lock shell 5 when the door is pushed.

[0067] The lock body of the embodiment can be used in different installation directions, and is convenient and easy to use.

[0068] The above is only the preferred embodiment of the utility model, and does not limit the patent protection scope of the utility model, and any equivalent structural transformation, direct or indirect application in other related technical fields, is also included in the protection scope of the utility model.

Claims

1. A latch tongue for mounting on a lock body, the lock body having a movable locking block, the locking block having an unlocked position and a locked position, characterised in that, The latch has a first rotation axis, the latch has a first position and a second position, the latch is rotated by a set angle around the first rotation axis in the second position relative to the first position; the latch has a first working surface and a second working surface, and the first working surface and the second working surface are obliquely arranged; The side part of the latch has a limiting part, the limiting part has a first limiting surface and a second limiting surface; the limiting part is used for cooperating with the locking block, when the locking block is in the locking position, the first position or the second position of the latch in the active state can be limited; When the latch is in the first position and the locking block is in the locking position, the locking block is in contact with the first limiting surface, and the latch is limited to remain in the first position in the active state; When the latch is in the second position and the locking block is in the locking position, the locking block is in contact with the second limiting surface, and the latch is limited to remain in the second position in the active state.

2. The latch of claim 1, wherein The first rotation axis is parallel to the first working surface and the second working surface; the first limiting surface is a flat surface or an arc surface; and the second limiting surface is a flat surface or an arc surface.

3. The latch of claim 2, wherein The first limiting surface is a flat surface and is obliquely arranged with the second working surface; and the second limiting surface is a flat surface and is obliquely arranged with the first working surface.

4. The latch of claim 3, wherein The first limiting surface is parallel to the first working surface, and the second limiting surface is parallel to the second working surface.

5. The latch of claim 1 wherein, The limiting part is a protrusion, and the first limiting surface and the second limiting surface are formed on the side wall of the protrusion.

6. A latch bolt assembly for mounting on a lock body, the lock body comprising a lock case, characterised in that, The latch assembly comprises: A latch plate arranged movably on the lock shell; The latch is the latch according to any one of claims 1 to 5, and the latch is rotatably arranged on the latch plate and can rotate around the first rotation axis relative to the latch plate to switch between the first position and the second position; A locking block movably arranged on the lock shell, the locking block has an unlocking position and a locking position, when the locking block is in the unlocking position, the latch can rotate to switch positions, when the latch is in the first position and the locking block is in the locking position, the locking block is in contact with the first limiting surface to limit the latch to remain in the first position in the active state, and at this time, the second working surface is obliquely arranged relative to the movable direction of the latch; when the latch is in the second position and the locking block is in the locking position, the locking block is in contact with the second limiting surface to limit the latch to remain in the second position in the active state, and at this time, the first working surface is obliquely arranged relative to the movable direction of the latch.

7. The latch assembly of claim 6, wherein, When the latch is in the first position and the locking block is in the locking position, the locking block is in contact with the first limiting surface to limit the latch to remain in the first position in the active state, and at this time, the movable direction of the latch is parallel to the first working surface; when the latch is in the second position and the locking block is in the locking position, the locking block is in contact with the second limiting surface to limit the latch to remain in the second position in the active state, and at this time, the movable direction of the latch is parallel to the second working surface; The locking block is slidably arranged on the lock shell, or the locking block is rotatably arranged on the lock shell.

8. The latch assembly of claim 6, wherein, The locking block is slidingly arranged on the lock housing, and has a matching hole. The latch assembly further comprises a rotating member rotatably arranged on the lock housing, one end of the rotating member extending into the matching hole, and a gap being formed between the extending part of the rotating member and the matching hole. The rotating member is capable of driving the locking block to slide and switch the position of the locking block when the rotating member rotates.

9. A latching tongue assembly as claimed in any of claims 6 to 8, wherein, The latch assembly further comprises a locking block reset elastic member and a latch plate reset elastic member. The locking block reset elastic member directly or indirectly cooperates with the locking block to keep the locking block in the locked position. The latch plate reset elastic member cooperates with the latch or the latch plate to make the latch and the latch plate have a moving tendency to move out of the lock housing.

10. A lock body characterized by, The lock housing and the latch assembly according to any one of claims 6-9 are comprised. The lock housing is arranged on a door, and the latch cooperates with a clamping plate arranged on a door frame. When the latch is in the first position and the locking block is in the locked position, the locking block is in contact with the first limiting surface to limit the latch to keep in the first position. At this time, the second working surface is arranged to be inclined relative to the movable direction of the latch, and the second working surface is used to cooperate with the clamping plate. When the latch is in the first position and extends into the clamping plate, the clamping plate can drive the latch to rotate and retract into the lock housing after the locking block is in the unlocked position. When the latch is in the second position and the locking block is in the locked position, the locking block is in contact with the second limiting surface to limit the latch to keep in the second position. At this time, the first working surface is arranged to be inclined relative to the movable direction of the latch, and the first working surface is used to cooperate with the clamping plate. When the latch is in the second position and extends into the clamping plate, the clamping plate can drive the latch to rotate and retract into the lock housing after the locking block is in the unlocked position.

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