Mechanical coded lock with ordered keys

Abstract

The invention discloses a key ordered type mechanical coded lock which comprises a lock shell, a spring bolt, code keys, a code elastic piece for resetting the code keys, a code changing button and a button elastic piece for resetting the code changing button, a code locking plate, a movable plate, an unlocking plate, a movable elastic piece enabling the movable plate to reset and an unlocking elastic piece enabling the unlocking plate to reset are arranged in the lock shell, the code keys are provided with a plurality of code strips different in length and orientation, only one code strip of the code keys with codes can be extruded with the unlocking plate, and the code strips can be extruded with the unlocking plate. The lengths of the password strips which can be extruded with the unlocking plate are different, the unlocking plate is sequentially extruded according to the sequence of the password strips from short to long during unlocking, so that the unlocking plate is moved to an unlocking position, and when the password keys are pressed down, the movable plate can be extruded open, so that the positioning surface 31 is positioned below the movable plate, and the unlocking plate is unlocked. After the movable plate is reset through the movable elastic piece, the positioning face 31 can abut against the movable plate so that the code keys can not bounce and reset, a code locking mechanism is arranged between the code keys and the code locking plate, and the code changing button can control the code locking mechanism to be unlocked so that code setting can be achieved by rotating the code keys. The unlocking plate can enable the spring bolt to be unlocked through the unlocking and locking mechanism, and the spring bolt can be locked through the unlocking and locking mechanism.

Description

Technical Field

[0001] The present invention relates to a lock, in particular to a key-pressing ordered mechanical password lock. Background Art

[0002] Currently, combination locks are widely available on the market due to their ease of operation and excellent anti-theft effects. However, conventional electronic combination locks require batteries to operate properly. Consequently, a utility model patent for a battery-free mechanical combination lock has emerged (Patent No.: CN200920008462, Patent Name: Intelligent Mechanical Combination Lock Cylinder). However, the unlocking passwords of these combination locks are not sequential, resulting in a simple password. Therefore, the present applicant has designed a mechanical combination lock with sequential key presses to address this issue. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a key-ordered mechanical password lock.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A key-ordered mechanical password lock, characterized in that it includes a lock shell, a lock tongue, a password button and a password elastic member for resetting the password button, a code change button and a button elastic member for resetting the code change button; a lock plate, a movable plate, an unlocking plate, a movable elastic member for resetting the movable plate, and an unlocking elastic member for resetting the unlocking plate are arranged in the lock shell; a plurality of password strips of different lengths and directions are arranged on the password button, and only one of the password strips of the password button can be pressed against the unlocking plate, and the lengths of the password strips that can be pressed against the unlocking plate are all different, so that the unlocking When the password strips are pressed in sequence from short to long, the unlocking plate is squeezed in sequence, so that the unlocking plate moves to the unlocking position. When the password button is pressed, the movable plate can be squeezed open so that the positioning surface 31 is located below the movable plate. After the movable plate is reset by the movable elastic member, the positioning surface 31 can be against the movable plate and the password button cannot be bounced up and reset. A locking mechanism is provided between the password button and the locking plate. The code change button can control the locking mechanism to unlock so that the password button can be rotated to set the code. The unlocking plate can unlock the lock tongue through the unlocking and closing mechanism, and the lock tongue can be locked through the unlocking and closing mechanism.

[0006] A guide rod is provided on the password button, and a guide hole which is slidably matched with the guide rod is provided in the lock shell.

[0007] The ends of the password strips are each provided with an extrusion slope, the unlocking plate is provided with an unlocking hole and an unlocking piece located in the unlocking hole, the password button is located in the unlocking hole, and the unlocking piece can be squeezed by the corresponding extrusion slope to move the unlocking plate.

[0008] The movable plate is provided with an movable hole, the password button is located in the movable hole, and the password button is provided with an extrusion portion capable of extruding the edge of the movable hole.

[0009] The lock mechanism includes a code change lock plate, a code change card plate and a lock code panel, the lock code panel is provided with a polygonal hole, the password button is provided with a polygonal rod corresponding to the shape of the polygonal hole, a clamping structure connecting the two is provided between the code change card plate and the lock code panel so that the lock code panel cannot move and disengage from the password button, a decoding protrusion is provided on the code change lock plate, and a linkage structure is provided between the unlocking plate and the code change lock plate, which can drive the code change lock plate to move when the unlocking plate moves, so that the decoding protrusion avoids the bottom of the code change button so that the code change button can be pressed to drive the code change card plate to move and release the clamping structure.

[0010] The clamping structure includes a lock code column arranged under the lock code panel, and the lock code column is provided with a lock code slot, and the code changing card plate can be clamped into the lock code slot.

[0011] The linkage structure includes a vertical plate arranged on the code-changing lock plate and a horizontal plate arranged on the unlocking plate, and the horizontal plate can be abutted against the vertical plate.

[0012] The code-changing card plate is provided with a code-changing hole, and the decoding end of the code-changing button can be located in the code-changing hole and squeeze the edge of the code-changing hole to move the code-changing card plate and separate from the code-locking slot.

[0013] It also includes a lever and a rod elastic part, the lever is rotatably connected to the lock housing, the rod elastic part can push the lever to rotate so that the lever pushes the lock tongue to move and lock, and the unlocking plate can push the lever to rotate in the opposite direction so that the lever pushes the lock tongue to move in the opposite direction and unlock.

[0014] A lock plate spring supporting the unlocking plate is provided between the unlocking plate and the lock housing.

[0015] The beneficial effects of the present invention are as follows: a plurality of password strips of different lengths and directions are provided on the password button of the present invention, and when unlocking, the unlocking plate is squeezed in sequence according to the password strips from short to long, thereby determining the order of the password keys when unlocking, thereby realizing orderly password setting and unlocking, and improving the complexity of the password compared to disordered locks, thereby improving the reliability of the lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and examples.

[0017] Figure 1 It is an overall view of the present invention;

[0018] Figure 2 is an exploded view of the present invention;

[0019] Figure 3 It is a view of the internal structure of the present invention;

[0020] Figure 4 This is a structural view of the password key of the present invention;

[0021] Figure 5 This is the structural view of the lock code panel;

[0022] Figure 6 It is a structural view of the surface shell;

[0023] Figure 7 It is a structural view showing the locking mechanism;

[0024] Figure 8 It is a bottom view of the internal structure of the present invention. DETAILED DESCRIPTION

[0025] The advantages and features of the present disclosure and its implementation methods will be illustrated by the following embodiments described with reference to the accompanying drawings. However, the present disclosure can be embodied in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure will be comprehensive and complete and will fully convey the scope of the present disclosure to those skilled in the art. Furthermore, the present disclosure is limited only by the scope of the claims.

[0026] The shapes, sizes, proportions, angles and numbers disclosed in the drawings for describing the embodiments of the present disclosure are merely examples, and therefore the present disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, when a detailed description of a related known function or configuration is determined to be unnecessary to obscure the focus of the present disclosure, the detailed description will be omitted. Where “including”, “having” and “comprising” described in this specification are used, other components may be added unless “only” is used. Unless otherwise indicated, terms in the singular may include plural forms.

[0027] When explaining an element, although not explicitly described, the element is understood to include a range of error.

[0028] When describing a positional relationship, for example, when the positional relationship is described as "on," "above," "below," and "adjacent to," one or more parts may be arranged between two other parts, unless "immediately" or "directly" is used.

[0029] When describing a temporal relationship, for example, when a temporal order is described as “after,” “subsequently,” “next,” and “before,” discontinuous cases may be included unless “just” or “directly” is used.

[0030] It should be understood that although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of this disclosure.

[0031] As will be fully appreciated by those skilled in the art, the features of the different embodiments of the present disclosure may be coupled or combined with each other in part or in whole, and may cooperate with each other in various ways and be driven technically. The embodiments of the present disclosure may be performed independently of each other, or may be performed together in a mutually dependent relationship.

[0032] Reference Figures 1 to 8 The present invention discloses a key-ordered mechanical password lock, comprising a lock shell, a lock tongue 1, a password button 2, a password elastic member 3 for resetting the password button 2, a code change button 4, and a button elastic member (not shown in the figure) for resetting the code change button 4. The lock shell is square and comprises a bottom shell 5 and a surface shell 6. A locking plate 7, a movable plate 8, an unlocking plate 9, a movable elastic member (not shown in the figure) for resetting the movable plate 8, and an unlocking elastic member (not shown in the figure) for resetting the unlocking plate 9 are arranged in the lock shell. A plurality of password strips of different lengths and directions are arranged on the password button 2, and only one of the password strips of the password button 2 with a code can be located in the set position and squeezed with the unlocking plate 9, and can be pressed against the unlocking plate 9 with all the other strips. The lengths of the password strips squeezed by the unlocking plate 9 are all different. When unlocking, the unlocking plate 9 is squeezed in order from short to long password strips, so that the unlocking plate 9 moves to the unlocking position. When the password button 2 is pressed, it can squeeze the movable plate 8 so that the positioning surface 31 is located below the movable plate 8. After the movable plate 8 is reset by the movable elastic member, the positioning surface 31 can be against the movable plate 8, so that the password button 2 cannot bounce back and reset. A locking mechanism is provided between the password button 2 and the lock plate 7. The code change button 4 can control the locking mechanism to unlock so that the password button 2 can be rotated to set the code. The unlocking plate 9 can unlock the lock tongue 1 through the lock opening and closing mechanism, and the lock tongue 1 can be locked through the lock opening and closing mechanism. The movable elastic member and the unlocking elastic member are both springs. Springs are commonly used parts, so the specific installation structure is prior art and will not be described in detail.

[0033] The principle of the above unlocking is that: there are six password strips in this application, including strip 1 10, strip 2 11, strip 3 12, strip 4 13, strip 5 14, and strip 6 15 in order from short to long. When setting the code, any six password buttons 2 are selected for setting the code, including button 1, button 2, button 3, button 4, button 5, and button 6. The code is set by rotating the six password buttons 2, turning strip 10 of button 1 to the secret setting position, turning strip 2 11 of button 2 to the secret setting position, and finally turning strip 6 15 of button 6 to the secret setting position.

[0034] When unlocking, when button one is pressed, the length of strip one 10 is just enough to push the unlocking plate 9, so that the unlocking plate 9 moves a certain distance, and at the same time, button one can squeeze the movable plate 8 so that the positioning surface 31 is located below the movable plate 8. After button one is pressed to the bottom, the movable plate 8 is reset by the movable elastic member, and the positioning surface 31 of button one can be against the movable plate 8 so that button one cannot bounce back. At this time, the user can release button one and press button two. When button two is pressed, the length of strip two 11 is just enough to push the unlocking plate 9 again, so that the unlocking plate 9 moves a certain distance. At the same time, button two can squeeze the movable plate 8 so that the positioning surface 31 is located below the movable plate 8. 1 is located below the movable plate 8. When the movable plate 8 is squeezed open, the positioning surface 31 of button 1 is offset from the movable plate 8. As a result, button 1 will bounce back and reset under the action of the password elastic member 3. After button 2 is pressed to the bottom, the movable plate 8 is reset by the movable elastic member. The positioning surface 31 of button 2 can abut against the movable plate 8, so that button 2 cannot bounce back and reset. At this time, the user can release button 2 and press button 3. Similarly, press button 4, button 5, and button 6 in sequence. The unlocking plate 9 will retract the lock tongue 1 through the unlocking and closing mechanism while moving. When the unlocking plate 9 moves to the unlocking position, the lock tongue 1 also retracts to the unlocking position in the lock, thereby unlocking. If you press button three and then directly press button five, the unlocking plate 9 will not move far enough, and bar five 14 will counteract the unlocking plate 9 when it descends, and cannot push the unlocking plate 9 to move. However, button five pushes the movable plate 8, causing button three to reset, and the unlocking plate 9 will also be completely reset, but button five is restricted by the movable plate 8 and cannot bounce up. At this time, you can only press the clear code button 16 to reset button five, and then re-enter the password in sequence to unlock the door. This prevents multiple attempts to unlock by pressing the buttons, thereby improving the reliability of the lock. As a preferred structure, a lock plate spring 17 supporting the unlocking plate 9 is provided between the unlocking plate 9 and the lock shell. When the wrong password button 2 is pressed, the unlocking plate 9 can move down, resulting in the same feel as pressing the correct password button 2, and also preventing the unlocking plate 9 from being crushed.

[0035] Of course, in order to simplify the structure, since the password button 2 of the present application has only six password bars and only six positions, the position of the coded button 1 and the other non-coded password buttons 2 are actually the same. When pressing the first password, you can press button 1 or other non-coded password buttons 2, but buttons 2, 3, 4, 5, and 6 must be pressed in order.

[0036] When locked, press the code clearing button 16. In this application, to simplify the structure and avoid excessive complexity of components, the structure and principle of the code clearing button 16 are exactly the same as those of the password button 2, except that it is represented by the "#" character on the panel. Since the unlocking plate 9 is already in the unlocking position at this time, the password strip of the code clearing button 16 will not squeeze the unlocking plate 9. However, the code clearing button 16 can push open the movable plate 8 so that the positioning surface 31 is located below the movable plate 8. When pushing open the movable plate 8, the positioning surface 31 of button six is displaced from the movable plate 8. Therefore, under the action of the password elastic member 3, button six will bounce up and reset. At the same time, the unlocking plate 9 is also reset under the action of the unlocking elastic member, and the lock tongue 1 extends and locks under the action of the locking and unlocking mechanism. After the code clearing button 16 is pressed to the bottom, the movable plate 8 is reset through the movable elastic member, and the positioning surface 31 of the code clearing button 16 can abut against the movable plate 8 to prevent the code clearing button 16 from bouncing up and resetting until the next unlocking, when the code clearing button 16 can bounce up and reset.

[0037] Of course, when the user needs to reset the password, first enter the correct password, and then press the code changing button 4. The code changing button 4 can control the unlocking of the code locking mechanism so as to be able to rotate the password button 2 to set the code.

[0038] As shown in the figure, a guide rod 18 is provided on the password button 2, a guide post is provided in the lock housing, and a guide hole 19 slidably engaged with the guide rod 18 is provided on the guide post, so as to guide the password button 2 to be pressed vertically and raised. The password elastic member 3 is a spring, sleeved on the guide rod 18 and the guide post, with one end abutting against the lock housing and the other end abutting against the password strip on the password button 2.

[0039] As shown in the figure, extrusion inclined surfaces 20 are provided at the ends of the password strips. An unlocking hole 21 and an unlocking piece 22 located in the unlocking hole 21 are provided on the unlocking plate 9. The password button 2 is located in the unlocking hole 21. The unlocking piece 22 can be extruded by the corresponding extrusion inclined surface 20 to move the unlocking plate 9. When a certain password strip is in the encryption setting position, the extrusion inclined surface 20 faces the unlocking piece 22. During the unlocking process, when the unlocking plate 9 moves to the corresponding position, the edge of the unlocking piece 22 is exactly located below the extrusion inclined surface 20, so that when the password button 2 is pressed, the extrusion inclined surface 20 can push the unlocking piece 22 to move, thereby pushing the unlocking plate 9 to move.

[0040] As shown in the figure, a movable hole 23 is provided on the movable plate 8. The movable hole 23 is preferably an elliptical hole. The password button 2 is located in the movable hole 23. An extrusion portion 24 capable of extruding the edge of the movable hole 23 is provided on the password button 2. The extrusion portion 24 is a convex block with an arc-shaped inclined surface. The edge of the movable plate 8 is supported to slide by the cooperation of the convex edge 25 and the chute 26 on the lock housing wall, and the front shell 6 restricts the movable plate 8 from disengaging.

[0041] As shown in the figure, the lock mechanism includes a code change lock plate 27, a code change card plate 28 and a lock code panel 29. The lock code panel 29 is provided with a polygonal hole 30, which is preferably a hexagonal hole in this application. The password button 2 is provided with a polygonal rod 31 corresponding to the shape of the polygonal hole 30, so that the password button 2 is restricted by the lock code panel 29 and cannot be rotated to change the code. In this application, the hexagonal rod 31 is preferably used because each side of the rod 31 corresponds to a password bar of a certain direction and length. Therefore, the password setting of this application is also six digits. The code change card plate 2 8 and the lock code panel 29 are provided with a card connection structure connecting the above two so that the lock code panel 29 cannot move and is separated from the password button 2. A decoding protrusion 32 is provided on the code change lock plate 27, and a linkage structure is provided between the unlocking plate 9 and the code change lock plate 27. When the unlocking plate 9 moves, it can drive the code change lock plate 27 to move, so that the decoding protrusion 32 avoids the bottom of the code change button 4 so that the code change button 4 can be pressed down to drive the code change card plate 28 to move and release the card connection structure. There is a hole on the face shell 6, and the code change button 4 is located in the hole and moves up and down.

[0042] As shown in the figure, the snap-fit ​​structure includes a lock code column 33 arranged under the lock code panel 29, and a lock code slot 34 is provided on the lock code column 33. The code change card plate 28 can be inserted into the lock code slot 34, so that the lock code panel 29 cannot be removed from the lock shell. A limit slot 35 is relatively provided on the code change card plate 28, and a limit plate 36 is relatively provided in the lock shell and is located in the limit slot 35, thereby ensuring that the code change card plate 28 moves linearly in the lock shell.

[0043] As shown in the figure, the linkage structure includes a vertical plate 37 provided on the code-changing lock plate 27 and a horizontal plate 38 provided on the unlocking plate 9. The horizontal plate 38 can be abutted against the vertical plate 37. Through the above structure, when the unlocking plate 9 is set to move to the last section, the horizontal plate 38 can abut against the vertical plate 37 and drive the code-changing lock plate 27 to move, which saves space and the above structure is simple.

[0044] In the above description, the button elastic member is a spring, which is a commonly used member. Therefore, the specific installation structure is a prior art and will not be described in detail.

[0045] The principle of code changing of the above structure is that when the code needs to be changed, the correct password must be entered first, because the unlocking plate 9 will move only after the correct password is entered, and the unlocking plate 9 pushes the vertical plate 37 through the horizontal plate 38 to drive the code changing lock plate 27 to move. The movement of the code changing lock plate 27 can make the decoding protrusion 32 avoid the bottom of the code changing button 4. At this time, the code changing button 4 is pressed, and the end of the code changing button 4 can squeeze the code changing card plate 28 and drive the code changing card plate 28 to move and release the clamping structure, so that the user can pick up the lock code panel 29, and then turn the password button 2 to set the code. After the code setting is completed, the lock code panel 29 is reinstalled, and then the clear code button 16 is pressed to lock the door.

[0046] As shown in the figure, a code change hole 39 is provided on the code change card plate 28. The decoding end of the code change button 4 can be located in the code change hole 39 and squeeze the edge of the code change hole 39 to move the code change card plate 28 and separate from the lock code slot 34. There is an inclined guide surface 40 on the decoding end, and the edge of the code change hole 39 is squeezed by the inclined guide surface 40.

[0047] As shown in the figure, it also includes a lever 41 and a rod elastic member (not shown in the figure). The lever 41 is rotatably connected to the lock housing. The lock housing has an axis, and the lever 41 has an axial hole that matches the axis. The rod elastic member can push the lever 41 to rotate, so that the lever 41 pushes the lock tongue 1 to move and lock. The unlocking plate 9 can push the lever 41 to rotate in the opposite direction, so that the lever 41 pushes the lock tongue 1 to move in the opposite direction and unlock. Furthermore, there is an opening and closing lock groove 42 in the lock housing, one end of which is connected to the outside world, and the lock tongue 1 slides with the opening and closing lock groove 42. The lock tongue 1 has a lock tongue groove 43. The end of the lever 41 has a disc located in the lock tongue groove 43. The edge of the disc can be squeezed with the lock tongue groove 43, so that the lever 41 drives the lock tongue 1 to slide along the opening and closing lock groove 42 while rotating. The rod elastic member is a torsion spring, which is a commonly used component. Therefore, the specific installation structure is existing technology and will not be described in detail.

[0048] The above is a detailed introduction to a key-ordered mechanical combination lock provided by an embodiment of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A key-ordered mechanical password lock, characterized in that: The invention comprises a lock shell, a lock tongue, a password button and a password elastic member for resetting the password button, a code changing button and a button elastic member for resetting the code changing button. A code locking plate, a movable plate, an unlocking plate, a movable elastic member for resetting the movable plate and an unlocking elastic member for resetting the unlocking plate are arranged in the lock shell. A plurality of password strips with different lengths and directions are arranged on the password button, and only one of the password strips of the code-setting password button can be pressed against the unlocking plate, and the lengths of the password strips that can be pressed against the unlocking plate are all different. When unlocking, the password strips are arranged in a different direction according to the password strips. The unlocking plate is squeezed in the order of the longest to the longest, so that the unlocking plate moves to the unlocking position, and when the password button is pressed, the movable plate can be squeezed open so that the positioning surface is located below the movable plate, and after the movable plate is reset by the movable elastic member, the positioning surface can be against the movable plate so that the password button cannot bounce up and reset, and a locking mechanism is arranged between the password button and the locking plate, and the code change button can control the locking mechanism to unlock so that the password button can be rotated to set the code, and the unlocking plate can unlock the lock tongue through the opening and closing lock mechanism, and the lock tongue can be locked through the opening and closing lock mechanism.

2. A key-ordered mechanical password lock according to claim 1, characterized in that: A guide rod is arranged on the password button, and a guide hole which is slidably matched with the guide rod is arranged in the lock shell.

3. A key-ordered mechanical password lock according to claim 1, characterized in that: The ends of the password strip are each provided with an extrusion slope, the unlocking plate is provided with an unlocking hole and an unlocking piece located in the unlocking hole, the password button is located in the unlocking hole, and the unlocking piece can be squeezed by the corresponding extrusion slope to move the unlocking plate.

4. A key-ordered mechanical password lock according to claim 1, characterized in that: The movable plate is provided with an movable hole, the password key is located in the movable hole, and the password key is provided with an extrusion portion capable of extruding the edge of the movable hole.

5. A key-ordered mechanical password lock according to claim 1, characterized in that: The code lock mechanism includes a code change lock plate, a code change card plate and a code lock panel, the code lock panel is provided with a polygonal hole, the password button is provided with a polygonal rod corresponding to the shape of the polygonal hole, a clamping structure connecting the two is provided between the code change card plate and the code lock panel so that the code lock panel cannot move and separate from the password button, a decoding protrusion is provided on the code change lock plate, and a linkage structure is provided between the unlocking plate and the code change lock plate, so that when the unlocking plate moves, the code change lock plate can be driven to move so that the decoding protrusion avoids the bottom of the code change button, so that the code change button can be pressed to drive the code change card plate to move and release the clamping structure.

6. A key-ordered mechanical password lock according to claim 1, characterized in that: The clamping structure comprises a code locking column arranged under the code locking panel, the code locking column is provided with a code locking groove, and the code changing clamping plate can be clamped into the code locking groove.

7. A key-ordered mechanical password lock according to claim 1, characterized in that: The linkage structure comprises a vertical plate arranged on the code changing lock plate and a horizontal plate arranged on the unlocking plate, and the horizontal plate can abut against the vertical plate.

8. A key-ordered mechanical password lock according to claim 6, characterized in that: The code-changing card plate is provided with a code-changing hole, and the decoding end of the code-changing button can be located in the code-changing hole and squeeze the edge of the code-changing hole to move the code-changing card plate and separate from the code-locking slot.

9. The key-ordered mechanical password lock according to claim 1, characterized in that: It also includes a lever and a rod elastic part, the lever is rotatably connected to the lock housing, the rod elastic part can push the lever to rotate so that the lever pushes the lock tongue to move to lock, and the unlocking plate can push the lever to rotate in the opposite direction so that the lever pushes the lock tongue to move in the opposite direction to unlock.

10. A key-ordered mechanical password lock according to claim 1, characterized in that: A lock plate spring supporting the unlocking plate is arranged between the unlocking plate and the lock housing.

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