A flat lock

Abstract

The present application relates to the technical field of flat lock, in particular to a kind of flat lock, wherein a kind of flat lock includes: base, with assembly cavity;Pivot, with base rotatable connection, and inner end enters the assembly cavity;Pin, is located in the inner end of the pivot;Handle, with the assembly cavity is adapted, by the pin with the pivot rotatable connection, first plane and second plane are equipped with connection on the side close to the assembly cavity, there is included angle between the first plane and the second plane, first protrusion is equipped on the first plane;Avoiding step, is equipped in the inner side of the assembly cavity, for avoiding the first protrusion;And avoiding groove, is opened in the pivot, for avoiding the first protrusion;Wherein, in the lock state, the avoiding step is aligned with the avoiding groove, the handle can be with the axis of the pin to realize turning.

Description

Technical Field

[0001] This invention relates to the field of planar lock technology, and more specifically to a planar lock. Background Technology

[0002] A flat lock is one in which the free end of the handle can be fixed or separated from the base, the rotating end of the handle is rotatably engaged with the base via a pivot on the base, and is also connected to the end of the pivot via a pin.

[0003] In the existing technology, when a flat lock is locked, the bolt is fixed to the outer door frame, and the handle can be fixed inside the base or flipped by a pin. When the flat lock is unlocked, the handle can not only rotate around the pivot to drive the bolt away from the door frame, but also flip around the pin. This structure has the following shortcomings: after the handle is flipped to a certain angle outward from the assembly cavity, once the handle rotates away from the initial position through the pivot, or if the rotating handle is accidentally pressed down during operation, the inner side of the handle is prone to colliding with the outer side of the base, causing paint peeling or dents on the surface of the base, thus affecting the appearance of the flat lock. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide a planar lock.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] A planar lock, comprising:

[0007] The base has an assembly cavity;

[0008] A rotating shaft is rotatably connected to the base, and its inner end extends into the assembly cavity;

[0009] A pin is located at the inner end of the rotating shaft;

[0010] The handle is adapted to the assembly cavity and is rotatably connected to the rotating shaft via the pin. A first plane and a second plane are provided on the side near the assembly cavity. There is an angle between the first plane and the second plane. A first protrusion is provided on the first plane.

[0011] An obstacle avoidance step is provided on the inner side of the assembly cavity to avoid the first protrusion;

[0012] An avoidance groove is formed on the rotating shaft to avoid the first protrusion;

[0013] A locking tongue is located at the outer end of the rotating shaft; and

[0014] An assembly through hole is provided at the end of the base and rotatably engages with the outer wall of the rotating shaft;

[0015] In the locked state, the avoidance step is aligned with the avoidance groove, and the handle can be flipped around the axis of the pin.

[0016] Preferred options also include:

[0017] The mounting groove is formed on the inner wall of the mounting through hole;

[0018] A limiting component, disposed within the mounting groove, includes an elastic element and a resisting structure, wherein the elastic element continuously provides the resisting structure with an elastic force that extends it out of the mounting groove;

[0019] A first groove is formed on the outer wall of the rotating shaft; and

[0020] The second groove is formed on the outer wall of the rotating shaft;

[0021] In the locked state, the first groove is aligned with the mounting groove, and the abutting structure can be inserted into the first groove; in the unlocked state, the second groove is aligned with the mounting groove, and the abutting structure can be inserted into the second groove.

[0022] Preferably, the elastic element is a spring, the abutting structure is a steel ball, and the inner end of the spring abuts against the mounting groove and the outer end abuts against the steel ball.

[0023] More preferably, the elastic element is a spring sheet, and the abutting structure is a second protrusion integrally formed in the middle of the spring sheet. The spring sheet is embedded in the mounting groove, and the second protrusion faces the rotating shaft.

[0024] Preferred options also include:

[0025] A positioning groove is formed at one end of the base near the locking tongue;

[0026] A positioning protrusion is provided on the inner side of the locking tongue and can be inserted into the positioning groove;

[0027] When the locking tongue rotates, the positioning protrusion slides into the positioning groove.

[0028] Preferably, the positioning groove includes a left arc-shaped groove and a right arc-shaped groove, and the left arc-shaped groove and the right arc-shaped groove are arranged symmetrically about the center of the base.

[0029] Preferred options also include:

[0030] An elastic washer is inserted through the rotating shaft and located between the clearance groove and the first protrusion.

[0031] Even more preferred are:

[0032] A wear-resistant washer is inserted through the shaft and located between the elastic washer and the first protrusion.

[0033] Preferred options also include:

[0034] A lock box, having a lock cylinder, is located at the end of the handle away from the pivot.

[0035] A lock groove is formed on the inner wall of the assembly groove and cooperates with the lock plate of the lock cylinder.

[0036] Preferred options also include:

[0037] The mounting structure is provided on the base, enabling the base to be fixed to an external object.

[0038] Preferred options also include:

[0039] The pressing block protrudes from the outer side of the connecting end of the handle;

[0040] When the pressing block is pushed, the free end of the handle can be tilted outward.

[0041] Preferred options also include:

[0042] The third plane is located on the pressing block and forms an angle with the outer side of the handle.

[0043] The beneficial effects of this invention are as follows:

[0044] Locked state: The handle is embedded in the assembly cavity and the first plane abuts against the bottom wall of the assembly cavity. At this time, the clearance step and the clearance groove are aligned and spliced ​​to form a clearance space. The first protrusion on the first plane is located directly above the clearance space. When the handle is flipped around the axis of the pin, the first protrusion can move freely in the clearance space.

[0045] Unlocking process: The end of the handle away from the pivot separates from the base and flips outward about the pin. The handle drives the first protrusion to sweep across the clearance space. The angle between the first plane and the bottom wall of the assembly cavity gradually increases, and the angle between the second plane and the bottom wall of the assembly cavity gradually decreases. During the process, the first protrusion is always located within the clearance space. When the second plane abuts against the bottom wall of the assembly cavity, the first protrusion separates from the clearance space. The handle drives the pivot to rotate about the pivot axis. The pivot drives the clearance groove to separate from the clearance step, making the clearance space disappear.

[0046] Unlocked state: The handle rotates to separate the bolt from the outer door frame. Because the clearance groove and clearance step are misaligned and the first protrusion is blocked by the bottom wall of the assembly cavity, the first protrusion cannot be flipped around the pin axis.

[0047] This invention utilizes the rotation of the pivot to drive the clearance groove to rotate relative to the clearance step, thereby adjusting the relative position of the clearance groove and the clearance step. In the locked state, since the assembly cavity provides space for the handle to rotate inward or outward around the pin axis, the handle will not interfere with the base in this state. During the unlocking process, because the clearance groove is in a misaligned state relative to the clearance step and the first protrusion is blocked by the bottom wall of the assembly cavity, the first protrusion cannot rotate around the pin axis, thus avoiding collision between the handle and the base. This also prevents paint chipping or dents from appearing on the surface of the base due to accidentally pressing down the rotating handle during operation, which helps to protect the integrity of the base surface and ensure that the appearance of the flat lock is not damaged. In addition, by using the second plane to abut against the bottom wall of the assembly cavity, the handle will not naturally rotate around the pin axis when rotating around the pivot. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0049] Figure 2 This is an exploded view of the components in Embodiment 1 of the present invention;

[0050] Figure 3 This is a schematic diagram of the handle structure in Embodiment 1 of the present invention;

[0051] Figure 4 This is a schematic diagram of the rotating shaft structure in Embodiment 1 of the present invention;

[0052] Figure 5 This is one of the schematic diagrams of the base structure in Embodiment 1 of the present invention;

[0053] Figure 6 This is a second schematic diagram of the base structure in Embodiment 1 of the present invention;

[0054] Figure 7 This is a schematic diagram of the base structure of Embodiment 2 of the present invention.

[0055] As shown in the figure: 1-base, 11-assembly cavity, 111-avoidance step, 112-locking groove, 12-assembly through hole, 121-installation groove, 13-positioning groove, 131-left arc groove, 132-right arc groove, 14-installation structure;

[0056] 2-Spindle, 21-Pin, 22-Allowing groove, 23-First groove, 24-Second groove, 25-Elastic washer, 26-Wear-resistant washer;

[0057] 3-Handle, 31-First plane, 311-First protrusion, 32-Second plane, 33-Lock box, 34-Pressing block, 341-Third plane;

[0058] 4-Lock tongue, 41-Positioning protrusion;

[0059] 5-Limiting component, 51-Elastic element, 52-Abutting structure. Detailed Implementation

[0060] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. The drawings are for reference and illustration only and do not constitute a limitation on the scope of protection of the present invention.

[0061] Example 1

[0062] Please see Figures 1-6 In this embodiment, a planar lock includes:

[0063] Base 1 has an assembly cavity 11;

[0064] The rotating shaft 2 is rotatably connected to the base 1, and its inner end extends into the assembly cavity 11;

[0065] Pin 21 is located at the inner end of the rotating shaft 2;

[0066] The handle 3 is adapted to the assembly cavity 11 and is rotatably connected to the rotating shaft 2 via the pin 21. A first plane 31 and a second plane 32 are provided on the side close to the assembly cavity 11. There is an angle between the first plane 31 and the second plane 32. A first protrusion 311 is provided on the first plane 31.

[0067] The step 111 is provided on the inner side of the assembly cavity 11 to avoid the first protrusion 311;

[0068] A clearance groove 22 is provided on the rotating shaft 2 to avoid the first protrusion 311;

[0069] Locking tongue 4 is located at the outer end of the rotating shaft 2; and

[0070] An assembly through hole 12 is provided at the end of the base 1 and rotates with the outer wall of the rotating shaft 2.

[0071] In the locked state, the avoidance step 111 is aligned with the avoidance groove 22, and the handle 3 can be flipped around the axis of the pin 21.

[0072] In this embodiment, two clearance steps 111 are provided. The two clearance steps 111 are arranged along the length of the assembly cavity 11. One clearance step 111 is recessed on the left side of the assembly cavity 11, and the other clearance step 111 is recessed on the right side of the assembly cavity 11. More preferably, the clearance step 111 is an arc-shaped structure with high ends and low middle. The arc surface of the arc-shaped structure faces the first protrusion 311, so that the first protrusion 311 can only move when it rotates to the middle of the clearance step 111. In this state, the two sides of the handle 3 can coincide with the two sides of the assembly cavity 11, thereby avoiding premature movement when the first protrusion 311 rotates to the end of the clearance step 111. Since the two sides of the handle 3 have not yet coincided with the two sides of the assembly cavity 11 in this state, the arc-shaped structure with high ends can reduce the range of the handle 3 that can be pressed down, further reducing the possibility of the handle 3 colliding with the base 1.

[0073] Preferred options also include:

[0074] The mounting groove 121 is formed on the inner wall of the mounting through hole 12;

[0075] The limiting component 5 is disposed in the mounting groove 121 and includes an elastic element 51 and a resisting structure 52. The elastic element 51 continuously provides the resisting structure 52 with an elastic force that extends out of the mounting groove 121.

[0076] A first groove 23 is formed on the outer wall of the rotating shaft 2; and

[0077] The second groove 24 is formed on the outer wall of the rotating shaft 2;

[0078] In the locked state, the first groove 23 is aligned with the mounting groove 121, and the abutting structure 52 can be inserted into the first groove 23; in the unlocked state, the second groove 24 is aligned with the mounting groove 121, and the abutting structure 52 can be inserted into the second groove 24.

[0079] In the prior art, the handle 3 is linked with the latch via the pivot 2. When the handle 3 rotates about the axis of the pivot 2, it drives the pivot 2 to rotate, and the pivot 2 drives the latch 4 to rotate. Since the handle 3 can only rotate if it leaves the assembly cavity 11, but the handle 3 itself has weight and the free end is generally equipped with a lock box 33, after the handle 3 leaves the assembly cavity 11, it lacks the force to support itself and the lock box 33. The handle 3 is prone to loosening and returning to its original position, and the latch 4 linked with the handle 3 also rotates as a result. With this structure, the latch 4 will collide with the door frame when the door is closed, causing deformation or scratches. Secondly, looseness will also cause no feedback when opening and closing the lock.

[0080] In this embodiment, the limiting component 5 provides support for the rotating shaft 2, ensuring that the rotating shaft 2 will not rotate without human force. By limiting the rotation of the rotating shaft 2, the position of the handle 3 and the locking tongue 4 is not easily changed, and there is a certain feedback when opening and closing the lock, which increases the operating feel.

[0081] In this embodiment, the elastic element 51 is a spring, the abutting structure 52 is a steel ball, the inner end of the spring abuts against the mounting groove 121, and the outer end abuts against the steel ball.

[0082] In this embodiment, when the rotating shaft 2 rotates around its own axis, the outer wall of the rotating shaft 2 presses against the steel ball and compresses the spring until the first groove 23 or the second groove 24 contacts the steel ball. The restoring elastic force of the spring can allow the steel ball to be inserted into the first groove 23 or the second groove 24. The cross-section of the rotating shaft 2 is circular. By using the spherical surface of the steel ball to contact the arc surface of the rotating shaft 2, it is beneficial to reduce the contact area between the steel ball and the outer wall of the rotating shaft 2. On the one hand, it can reduce the friction force when the rotating shaft 2 rotates, which is beneficial to delay the wear of the outer wall of the rotating shaft 2. On the other hand, it is convenient for the steel ball to exit from the first groove 23 or the second groove 24 and return to the mounting groove 121.

[0083] Preferred options also include:

[0084] The positioning groove 13 is formed at one end of the base 1 near the locking tongue 4;

[0085] The positioning protrusion 41 is located on the inner side of the locking tongue 4 and can be inserted into the positioning groove 13;

[0086] When the locking tongue 4 rotates, the positioning protrusion 41 slides into the positioning groove 13.

[0087] Preferably, the positioning groove 13 includes a left arc-shaped groove 131 and a right arc-shaped groove 132, and the left arc-shaped groove 131 and the right arc-shaped groove 132 are arranged symmetrically with the center of the base 1 as the axis of symmetry.

[0088] In the prior art, the handle 3 can rotate 360° around the mounting through hole 12 of the base 1 with the axis of the rotating shaft 2. However, in actual use, the unlocking function can be achieved by rotating the handle 3 to the left or right by a certain angle. Generally, a positioning component is added to limit the rotation angle and distinguish between left and right rotation. This structure has the following shortcomings: it increases the number of parts and assembly processes, and it is easy to miss the positioning component.

[0089] In this embodiment, the left arc-shaped groove 131 is a quarter-arc groove integrally formed on the base, and the right arc-shaped groove 132 is a quarter-arc groove integrally formed on the base. The positioning protrusion 41 cooperates with the left arc-shaped groove 131 to limit the rotation angle range of the latch 4 in the left-hand rotation direction. When the positioning protrusion 41 is located in the left arc-shaped groove 131, the handle 3 can rotate 0 to 90° around the mounting through hole 12 of the base 1 about the axis of the rotating shaft 2. Similarly, the positioning protrusion 41 cooperates with the right arc-shaped groove 132 to limit the rotation angle range of the latch 4 in the left-hand rotation direction. When the positioning protrusion 41 is located in the right arc-shaped groove 132, the handle 3 can rotate 0 to -90° around the mounting through hole 12 of the base 1 about the axis of the rotating shaft 2. The shape of the positioning protrusion 41... The L-shaped positioning protrusion 41 has its horizontal section integrally formed on the latch 4, and its vertical section is located in the left arc groove 131 or the right arc groove 132. Therefore, during assembly, the rotation direction of the handle 3 can be adjusted by selecting the vertical section of the positioning protrusion 41 to cooperate with the left arc groove 131 or the right arc groove 132. The two ends of the left arc groove 131 or the right arc groove 132 respectively play a limiting role. When the vertical section of the positioning protrusion 41 contacts the end of the left arc groove 131 or the right arc groove 132, the latch 4 cannot continue to rotate. Since the latch 4 is fixed to the rotating shaft 2 by screws, the rotating shaft 2 cannot rotate at this time, thus limiting the rotation angle of the handle 3. Compared with the prior art, this reduces the use of parts and assembly steps.

[0090] Preferred options also include:

[0091] An elastic washer 25 is inserted through the rotating shaft 2 and located between the clearance groove 22 and the first protrusion 311.

[0092] In this embodiment, the rotating shaft 2 includes a frustum and a rod arranged coaxially. There are two clearance grooves 22. In the locked state, the two clearance grooves 22 can be spliced ​​with the clearance step 111 on the base 1 to form a clearance space. The elastic washer 25 is coaxially inserted on the rod and stacked on top of the frustum and can cover the clearance groove 22. When the handle 3 rotates about the pin 21 as the axis, the first protrusion 311 presses down on the elastic washer 25 and causes it to undergo elastic deformation. At this time, the elastic washer 25 continuously provides the handle 3 with the elastic force for reset.

[0093] Even more preferred are:

[0094] Wear-resistant washer 26 is inserted on the rotating shaft 2 and located between elastic washer 25 and first protrusion 311.

[0095] In this embodiment, the wear-resistant washer 26 is coaxially inserted on the round rod and stacked on top of the elastic washer 25. When the first protrusion 311 is pressed down, it plays a role in protecting the elastic washer 25.

[0096] Preferred options also include:

[0097] Lock box 33, having a lock cylinder, is located at the end of the handle 3 away from the pivot 2;

[0098] Lock groove 112 is formed on the inner wall of the assembly groove and cooperates with the lock plate of the lock cylinder.

[0099] In this embodiment, the lock cylinder can control the lock plate to be fixed in the lock groove 112, or to be separated from the lock groove 112. The lock box 33 is used to restrict the free end of the handle 3 from flipping outward, thereby achieving the effect of locking.

[0100] Preferred options also include:

[0101] Mounting structure 14 is provided on the base 1, which enables the base 1 to be fixed to an external object.

[0102] In this embodiment, the mounting structure 14 is a columnar body located at the end of the base 1. The columnar body has screw holes, and the base 1 is connected to the external door by screws.

[0103] Preferred options also include:

[0104] The pressing block 34 protrudes from the outer side of the connecting end of the handle 3;

[0105] When the pressing block 34 is pushed, the free end of the handle 3 can be tilted outward.

[0106] When in use, the user needs to hold the free end of the handle 3 to rotate it. However, after the lock box 33 is unlocked, the free end of the handle 3 is embedded in the assembly cavity 11, and external force is still required to apply force to the handle 3 to make its free end tilt relative to the base 1. In the prior art, in order to facilitate the free end of the handle to detach from the assembly cavity 11, a notch is made on the edge of the assembly cavity 11 or the edge of the handle 3 to give the user space to apply force. However, the notch greatly reduces the aesthetics of the flat lock. In this embodiment, the pressing block 34 protruding from the handle 3 is used as the point of force application. When pushed, the handle 3 can rotate around the pin 21. Compared with the prior art, the edge of the handle 3 in this embodiment can fit with the edge of the assembly cavity 11, making the lines of the flat lock cleaner and helping to improve the added value of the flat lock.

[0107] Preferred options also include:

[0108] The third plane 341 is located on the pressing block 34 and has an angle with the outer side of the handle 3.

[0109] In this embodiment, the inclined third plane 341 is used as the user's force application point, which facilitates operation.

[0110] Example 2

[0111] The difference between this embodiment and Embodiment 1 is that:

[0112] Please see Figure 7 In this embodiment, the elastic element 51 is a spring sheet, and the abutting structure 52 is a second protrusion integrally formed in the middle of the spring sheet. The spring sheet is embedded in the mounting groove 121, and the second protrusion faces the rotating shaft 2.

[0113] In this embodiment, the mounting groove 121 is arc-shaped, and the spring piece is adapted to the mounting groove 121. The second protrusion is an arched protrusion located in the middle of the spring piece. When the rotating shaft 2 rotates around its own axis, the outer wall of the rotating shaft 2 presses against the second protrusion until the first groove 23 or the second groove 24 contacts the second protrusion. The restoring elastic force of the spring piece can make the second protrusion insert into the first groove 23 or the second groove 24, further reducing the use of parts. It is especially suitable for small-diameter assembly through holes 12, which simplifies the installation.

[0114] The rest of the content of this embodiment is the same as that of Embodiment 1, and will not be repeated here.

[0115] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Therefore, any equivalent variations made in accordance with the scope of the present invention are still within the scope of the present invention.

Claims

1. A planar lock, characterized in that, include: The base (1) has an assembly cavity (11); A rotating shaft (2) is rotatably connected to the base (1) and its inner end extends into the assembly cavity (11); A pin (21) is located at the inner end of the rotating shaft (2); The handle (3) is adapted to the assembly cavity (11) and is rotatably connected to the shaft (2) via the pin (21). A first plane (31) and a second plane (32) are provided on the side close to the assembly cavity (11). There is an angle between the first plane (31) and the second plane (32). A first protrusion (311) is provided on the first plane (31). A step (111) is provided on the inner side of the assembly cavity (11) to avoid the first protrusion (311). A clearance groove (22) is provided on the rotating shaft (2) to avoid the first protrusion (311). Locking tongue (4), located at the outer end of the rotating shaft (2); and An assembly through hole (12) is provided at the end of the base (1) and rotates in conjunction with the outer wall of the rotating shaft (2); In the locked state, the avoidance step (111) is aligned with the avoidance groove (22), and the handle (3) can be flipped around the axis of the pin (21). In the unlocked state, the rotating shaft (2) rotates and drives the avoidance groove (22) to rotate relative to the avoidance step (111) to a non-aligned state. The first protrusion (311) is blocked by the bottom wall of the assembly cavity (11) and cannot be flipped with the pin (21) as the axis, thereby preventing the handle (3) from colliding with the base (1).

2. A planar lock according to claim 1, characterized in that, Also includes: The mounting groove (121) is formed on the inner wall of the mounting through hole (12); The limiting component (5) is disposed in the mounting groove (121) and includes an elastic element (51) and a stop structure (52). The elastic element (51) continuously provides the stop structure (52) with an elastic force that extends out of the mounting groove (121). The first groove (23) is formed on the outer wall of the rotating shaft (2); and The second groove (24) is formed on the outer wall of the rotating shaft (2); In the locked state, the first groove (23) is aligned with the mounting groove (121), and the abutting structure (52) can be inserted into the first groove (23); In the unlocked state, the second groove (24) is aligned with the mounting groove (121), and the abutting structure (52) can be inserted into the second groove (24).

3. A planar lock according to claim 2, characterized in that, The elastic element (51) is a spring, the abutting structure (52) is a steel ball, the inner end of the spring abuts against the mounting groove (121), and the outer end abuts against the steel ball.

4. A planar lock according to claim 2, characterized in that, Also includes: A positioning groove (13) is provided at one end of the base (1) near the latch (4); A positioning protrusion (41) is provided on the inner side of the locking tongue (4) and can be inserted into the positioning groove (13); When the locking tongue (4) rotates, the positioning protrusion (41) slides into the positioning groove (13).

5. A planar lock according to claim 4, characterized in that, The positioning groove (13) includes a left arc groove (131) and a right arc groove (132), and the left arc groove (131) and the right arc groove (132) are arranged symmetrically with the center of the base (1) as the axis of symmetry.

6. A planar lock according to claim 1, characterized in that, Also includes: An elastic washer (25) is inserted through the pivot (2) and located between the clearance groove (22) and the first protrusion (311).

7. A planar lock according to claim 1, characterized in that, Also includes: A lock box (33) having a lock cylinder is located at the end of the handle (3) away from the pivot (2); The lock groove (112) is formed on the inner wall of the assembly cavity (11) and cooperates with the lock plate of the lock cylinder.

8. A planar lock according to claim 1, characterized in that, Also includes: The mounting structure (14) is provided on the base (1) and enables the base (1) to be fixed to an external object.

9. A planar lock according to claim 1, characterized in that, Also includes: The pressing block (34) protrudes from the outer side of the connecting end of the handle (3); When the pressing block (34) is pushed, the free end of the handle (3) can be tilted outward.

10. A planar lock according to claim 9, characterized in that, Also includes: The third plane (341) is located on the pressing block (34) and has an angle with the outer side of the handle (3).

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