Cam lock

Abstract

The cam lock comprises a lock shell and a lock assembly, and the lock shell is provided with a sliding groove with a right opening; the lock assembly is installed on the lock shell and comprises a rotating body, a rotating tongue piece, a locking block and a driving structure, the rotating body is rotatably installed on the right side of the sliding groove, the rotating tongue piece is connected with one end of the rotating body, a notch is formed in the side wall of the rotating body, and the locking block is arranged in the sliding groove in a left-right moving mode; the rotating body rotates between a first position and a second position; at the first position, the notch is communicated with the right opening, and the driving structure can drive the locking block to move into the notch or move out of the notch; at the second position, the notch is not communicated with the right opening; the cam lock can be controlled to be unlocked or not unlocked only by controlling the locking block to move into the notch or move out of the notch through the driving structure, the structure is simple, the locking block is connected with the notch in a clamped mode, the stability of unlocking and locking is good, and safety is high.

Description

Technical Field

[0001] The utility model relates to the field of locks, in particular to a cam lock. Background Art

[0002] The existing cam lock locks the cam piece through an electromagnet structure, which has a complex structure, poor stability and low safety. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems in the prior art. To this end, the utility model proposes a cam lock.

[0004] According to the first aspect of the present invention, the tongue lock comprises a lock housing and a lock assembly, the lock housing having a right-opening slide groove; the lock assembly is installed on the lock housing, and the lock assembly comprises a rotating body, a tongue piece, a locking block and a driving structure, the rotating body is rotatably installed on the right side of the slide groove, the tongue piece is connected to one end of the rotating body, the side wall of the rotating body has a notch, and the locking block is movably arranged in the slide groove left and right; the rotating body rotates between a first position and a second position; when in the first position, the notch is connected to the right opening, and the driving structure can drive the locking block to move into or out of the notch; when in the second position, the notch is not connected to the right opening.

[0005] The cam lock according to the embodiment of the present invention has at least the following technical effects: by providing a notch in the side wall of the rotating body and driving the locking block to move into or out of the notch through the driving structure, when the locking block is engaged with the notch, the locking block can block the rotation of the rotating body, and the cam piece cannot rotate, thereby preventing the lock from being unlocked; or when the locking block is not engaged with the notch, the locking block does not block the rotation of the rotating body, and the cam piece can rotate, thereby preventing the lock from being unlocked; the present invention only needs to control whether the locking block is moved into or out of the notch through the driving structure, so as to control whether the cam lock can be unlocked or not. The structure is simple, and by engaging the locking block with the notch, the stability of the switch lock is good and the safety is high.

[0006] According to some embodiments of the present invention, the driving structure includes a spring and a motor, the spring is located between the left side wall of the slide groove and the left end of the locking block, the locking block has an accommodating cavity, the rotating shaft of the motor is connected to a transmission member, the transmission member has an eccentric shaft, and the eccentric shaft is located in the accommodating cavity;

[0007] The motor drives the transmission member to rotate between a third position and a fourth position;

[0008] In the third position, the eccentric shaft drives the locking block to move leftward and out of the notch, and the spring biases and applies a first biasing force that moves the right end of the locking block into the notch;

[0009] In the fourth position, the eccentric shaft does not drive the locking block to move leftward, and the locking block can move into the notch under the action of the first biasing force.

[0010] According to some embodiments of the present invention, the lock housing has a positioning groove, the positioning groove is communicated with the sliding groove, and the motor and the transmission member are both installed in the positioning groove.

[0011] According to some embodiments of the present invention, the left end of the locking block has a mounting post, and the spring is sleeved outside the mounting post.

[0012] According to some embodiments of the present invention, the side wall of the rotating body also has a connecting portion, and a torsion spring is connected between the connecting portion and the lock housing. When the rotating body rotates from the first position to the second position, the torsion spring biases and applies a second biasing force to cause the rotating body to rotate to the first position.

[0013] According to some embodiments of the present invention, the lock housing has two positioning portions spaced apart along the circumferential direction of the rotating body, a positioning cavity is formed between the two positioning portions, and the connecting portion is located in the positioning cavity.

[0014] According to some embodiments of the present invention, a knob is further included outside the lock housing, the other end of the rotating body is rotatably mounted on the lock housing, and the knob is fixedly connected to the other end of the rotating body.

[0015] It also includes a battery and a circuit board installed on the lock housing, the circuit board is electrically connected to the battery and the motor respectively, and digital buttons are provided on the circuit board, and the digital buttons are provided on the side wall of the lock housing.

[0016] According to some embodiments of the present invention, the side wall of the lock housing has an installation cavity communicated with the outside of the lock housing, and the battery is placed in the installation cavity.

[0017] According to some embodiments of the present invention, a battery cover is further included, and the battery cover is detachably mounted on the mounting cavity.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 A schematic structural diagram of the cam lock when the rotating body is in the first position and the transmission member is in the third position;

[0021] Figure 2 Schematic diagram of the structure of the lock assembly;

[0022] Figure 3 A schematic diagram of the structure of the cam lock when the rotating body is in the first position and the transmission member is in the fourth position;

[0023] Figure 4 It is a structural schematic diagram of the cam lock with the rotating body in the second position;

[0024] Figure 5 It is a schematic diagram of the structure in which the rotating body and the torsion spring are installed on the lock housing;

[0025] Figure 6 This is a schematic diagram of the structure of the cam lock after the battery cover is removed;

[0026] Figure 7 It is a structural diagram of a cam lock.

[0027] Figure numerals: lock housing 100, slide groove 110, right opening 111, positioning groove 120, torsion spring 130, positioning portion 140, positioning cavity 141, mounting cavity 150, lock assembly 200, rotating body 210, notch 211, connecting portion 212, tongue piece 220, locking block 230, accommodating cavity 231, mounting column 232, driving structure 240, spring 241, motor 242, transmission part 243, eccentric shaft 244, knob 300, battery 400, circuit board 500, numeric keypad 510, battery cover 600. DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0030] In the description of this utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Reference Figure 1 、 2 As shown, the cam lock according to the embodiment of the present invention includes a lock housing 100 and a lock assembly 200, the lock housing 100 has a slide groove 110 with a right opening 111; the lock assembly 200 includes a rotating body 210, a rotating tongue piece 220, a locking block 230 and a driving structure 240, the rotating body 210 is rotatably mounted on the lock housing 100 and is located to the right of the slide groove 110, the rotating tongue piece 220 is connected to one end of the rotating body 210 and is located outside the lock housing 100, the side wall of the rotating body 210 has a notch 211, the locking block 230 is movably arranged in the slide groove 110, and the driving structure 240 is mounted on the lock housing 100; the rotating body 210 rotates between a first position and a second position; in the first position, the notch 211 is connected to the right opening 111, and the driving structure 240 can drive the locking block 230 to move into the notch 211 (as shown in FIG. Figure 3 as shown) or removed from the notch 211 (as shown Figure 1 as shown); Figure 4 As shown, in the second position, the notch 211 is not connected to the right opening 111 .

[0033] By providing a notch 211 on the side wall of the rotating body 210 and driving the locking block 230 to move into or out of the notch 211 through the driving structure 240, when the locking block 230 is engaged with the notch 211, the locking block 230 can block the rotating body 210 from rotating, and the rotating tongue piece 220 cannot rotate, thereby preventing the lock from being unlocked; or when the locking block 230 is not engaged with the notch 211, the locking block 230 does not block the rotating body 210 from rotating, and the rotating tongue piece 220 can rotate, thereby preventing the lock from being unlocked; the utility model only needs to control whether the locking block 230 is moved into or out of the notch 211 through the driving structure 240 to control whether the rotating tongue lock can be unlocked or not. The structure is simple, and the locking block 230 is engaged with the notch 211, which has good stability and high safety.

[0034] Specifically, the lock shell 100 is installed on the door body of the office cabinet, and the tongue piece 220 is located at the rear of the door body. When the door needs to be locked, the user closes the door body and drives the rotating body 210 to rotate and turn it to the first position, so that the notch 211 on the rotating body 210 is connected with the right opening 111 of the slide groove 110 on the lock shell 100, and the tongue piece 220 on the rotating body 210 is engaged with the door frame of the office cabinet, so that the door frame cannot be opened. Then the user starts the driving structure 240, and the driving structure 240 drives the locking block 230 to move to the right, so that the right end of the locking block 230 moves into the notch 211, so that the locking block 230 is engaged with the notch 211. , and then the rotating body 210 cannot rotate, and the tongue piece 220 remains engaged with the door frame of the office cabinet to lock the door; when the door needs to be opened, the user starts the driving structure 240 again, and the driving structure 240 drives the locking block 230 to move to the left, so that the right end of the locking block 230 moves out of the notch 211, and then the rotating body 210 can rotate relative to the lock shell 100. The user drives the rotating body 210 to rotate and turns it to the second position, so that the notch 211 on the rotating body 210 is not connected to the right opening 111 of the slide groove 110 on the lock shell 100, and the tongue piece 220 is not engaged with the door frame of the office cabinet, and then the user can open the door body.

[0035] In some embodiments of the present invention, Figure 1 、 2 As shown, the driving structure 240 includes a spring 241 and a motor 242. The spring 241 is located between the left side wall of the slide groove 110 and the left end of the locking block 230. The locking block 230 has an accommodating cavity 231. The rotating shaft of the motor 242 is connected to a transmission member 243. The transmission member 243 has an eccentric shaft 244. The eccentric shaft 244 is located in the accommodating cavity 231.

[0036] The motor 242 drives the transmission member 243 to rotate between the third position and the fourth position;

[0037] like Figure 1 As shown, in the third position, the eccentric shaft 244 drives the locking block 230 to move leftward and out of the notch 211, and the spring 241 biases and applies a first biasing force that moves the right end of the locking block 230 into the notch 211;

[0038] like Figure 3 As shown, in the fourth position, the eccentric shaft 244 does not drive the locking block 230 to move leftward, and the locking block 230 can move into the notch 211 under the action of the first biasing force.

[0039] The eccentric shaft 244 cooperates with the spring 241 to drive the locking block 230 to move left and right, so that the driving structure 240 has a simple structure and is driven by the motor 242. It is more stable and safer than the electromagnetic structure.

[0040] like Figure 1 、 3 4, when the rotating body 210 is in the first position and needs to be unlocked, the motor 242 drives the transmission member 243 to rotate counterclockwise and rotate to the third position. During the rotation process, the transmission member 243 drives the eccentric shaft 244 to move, thereby making the eccentric shaft 244 located to the left of the axis of the rotating shaft of the motor 242 and away from the notch 211, so that the eccentric shaft 244 drives the locking block 230 to move to the left, so that the right end of the locking block 230 leaves the notch 211, and the locking block 230 compresses the spring 241, so that the rotating body 210 can rotate relative to the lock housing 100 to achieve unlocking; when it is necessary to lock, The motor 242 drives the transmission member 243 to rotate clockwise, so that the transmission member 243 rotates from the third position to the fourth position. The transmission member 243 drives the eccentric shaft 244 to move, so that the eccentric shaft 244 is located to the right of the axis of the rotating shaft of the motor 242, so that the position of the eccentric shaft 244 is close to the notch 211, that is, the eccentric shaft 244 does not drive the locking block 230 to move to the left, and then the spring 241 can elastically recover, so that the spring 241 can drive the locking block 230 to move to the right, so that the right end of the locking block 230 moves into the notch 211, so that the rotating body 210 cannot rotate relative to the lock housing 100, thereby achieving locking.

[0041] In a further embodiment of the present invention, Figure 1 、 5 As shown, the lock housing 100 has a positioning groove 120, which is connected to the sliding groove 110. The motor 242 and the transmission member 243 are both installed in the positioning groove 120 to prevent the motor 242 and the transmission member 243 from moving.

[0042] In a further embodiment of the present invention, Figure 2 As shown, the left end of the locking block 230 has a mounting post 232 , and the spring 241 is sleeved outside the mounting post 232 to prevent the spring 241 from moving.

[0043] In some embodiments of the present invention, Figure 2 、 5 As shown, the side wall of the rotating body 210 also has a connecting portion 212, and a torsion spring 130 is connected between the connecting portion 212 and the lock housing 100. When the rotating body 210 rotates from the first position to the second position, the torsion spring 130 biases and applies a second biasing force to rotate the rotating body 210 to the first position, so that the tongue lock automatically returns to the locked state after being unlocked.

[0044] In a further embodiment of the present invention, Figure 5As shown, the lock housing 100 has two positioning portions 140 spaced apart along the circumferential direction of the rotating body 210, a positioning cavity 141 is formed between the two positioning portions 140, and the connecting portion 212 is located in the positioning cavity 141, so as to limit the rotation range of the rotating body 210 through the two positioning portions 140, thereby ensuring that the rotating body 210 rotates between the first position and the second position.

[0045] In some embodiments of the present invention, a knob 300 is further included outside the lock housing 100. The other end of the rotating body 210 is rotatably mounted on the lock housing 100. The knob 300 is fixedly connected to the other end of the rotating body 210 so that the knob 300 can be used as a door handle.

[0046] In a further embodiment of the present invention, Figure 1 、 6 As shown, it also includes a battery 400 and a circuit board 500 installed on the lock housing 100. The circuit board 500 is electrically connected to the battery 400 and the motor 242 respectively. A digital button 510 is provided on the circuit board 500, and the digital button 510 is provided on the side wall of the lock housing 100.

[0047] The digital button 510 is used to control whether the cam lock can be unlocked; and the battery 400 is provided to facilitate the use of the cam lock.

[0048] In a further embodiment of the present invention, Figure 6 As shown, the side wall of the lock housing 100 has an installation cavity 150 that is connected to the outside of the lock housing 100. The battery 400 is placed in the installation cavity 150. By providing the installation cavity 150, the battery 400 can be placed externally, which is convenient for installation, disassembly and replacement.

[0049] In a further embodiment of the present invention, Figure 7 As shown, a battery cover 600 is also included. The battery cover 600 is detachably mounted on the mounting cavity 150 , making the cam lock more beautiful and preventing foreign matter from entering the mounting cavity 150 .

[0050] Throughout this specification, references to the terms "some embodiments" or "it is contemplated that" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0051] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cam lock, characterized in that: include: A lock housing having a right-opening slide; A lock assembly is mounted on the lock housing, comprising a rotating body, a rotating tongue piece, a locking block, and a driving structure. The rotating body is rotatably mounted on the right side of the slide groove, the rotating tongue piece is connected to one end of the rotating body, a side wall of the rotating body has a notch, and the locking block is movably disposed in the slide groove. The rotating body rotates between a first position and a second position; When in the first position, the notch is connected to the right opening, and the driving structure can drive the locking block to move into or out of the notch; When in the second position, the notch is not connected to the right opening.

2. The cam lock according to claim 1, characterized in that: The driving structure includes a spring and a motor, wherein the spring is located between the left side wall of the slide groove and the left end of the locking block, the locking block has a receiving cavity, the rotating shaft of the motor is connected to a transmission member, the transmission member has an eccentric shaft, and the eccentric shaft is located in the receiving cavity; The motor drives the transmission member to rotate between a third position and a fourth position; In the third position, the eccentric shaft drives the locking block to move leftward and out of the notch, and the spring biases and applies a first biasing force that moves the right end of the locking block into the notch; In the fourth position, the eccentric shaft does not drive the locking block to move leftward, and the locking block can move into the notch under the action of the first biasing force.

3. The cam lock according to claim 2, characterized in that: The lock housing has a positioning groove, which is communicated with the sliding groove, and the motor and the transmission member are both installed in the positioning groove.

4. The cam lock according to claim 2, characterized in that: The left end of the locking block is provided with a mounting post, and the spring is sleeved outside the mounting post.

5. The cam lock according to claim 1, characterized in that: The side wall of the rotating body further has a connecting portion, and a torsion spring is connected between the connecting portion and the lock housing. When the rotating body rotates from the first position to the second position, the torsion spring biases and applies a second biasing force to rotate the rotating body to the first position.

6. The cam lock according to claim 5, characterized in that: The lock housing has two positioning parts spaced apart along the circumferential direction of the rotating body, a positioning cavity is formed between the two positioning parts, and the connecting part is located in the positioning cavity.

7. The cam lock according to claim 1, characterized in that: The utility model further comprises a knob located outside the lock housing. The other end of the rotating body is rotatably mounted on the lock housing, and the knob is fixedly connected to the other end of the rotating body.

8. The cam lock according to claim 2, characterized in that: It also includes a battery and a circuit board installed on the lock housing, the circuit board is electrically connected to the battery and the motor respectively, and digital buttons are provided on the circuit board, and the digital buttons are provided on the side wall of the lock housing.

9. The cam lock according to claim 8, characterized in that: The side wall of the lock housing is provided with an installation cavity communicated with the outside of the lock housing, and the battery is placed in the installation cavity.

10. The cam lock according to claim 9, characterized in that: A battery cover is also included, and the battery cover is detachably mounted on the mounting cavity.

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