A concealed catch device

Abstract

The utility model discloses a hidden lock catch device, including bolt, pin seat, push rod and driving part, the bolt sets up at the inboard of apron, the pin seat sets up in the inner wall of box body, the pin seat is provided with pinhole and first accommodating hole, the pinhole is used for accommodating the bolt insertion, the push rod slidingly connects in first accommodating hole, the pinhole with first accommodating hole intercommunication, the driving part is used for driving push rod reciprocating movement to with push rod clamping or loosening on the bolt. The utility model can avoid the lock catch device exposure, avoid the lock catch device to be destroyed or illegal disassembly, improve the confidentiality of equipment core component.

Description

Technical Field

[0001] This utility model relates to the field of locking technology, specifically to a concealed locking device. Background Technology

[0002] When developing new equipment, in order to enhance a company's competitiveness within the industry, it is usually necessary to keep the core components of the equipment confidential without affecting its use. Existing equipment includes a housing, a cover, and components housed inside the housing; the cover is locked to the housing using locks.

[0003] However, existing locks are directly exposed on the outside of the enclosure, making them easy targets for physical attacks. This can lead to lock damage or illegal disassembly, making it easy for core components inside the enclosure to be stolen, seriously threatening the confidentiality of the equipment's core components. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a concealed locking device, which can prevent the locking device from being exposed, prevent the locking device from being damaged or illegally disassembled, and improve the confidentiality of the core components of the equipment.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A concealed locking device includes a pin, a pin seat, a push rod, and a driving component. The pin is disposed on the inner side of a cover plate, and the pin seat is disposed on the inner wall of a housing. The pin seat has a pin hole and a first receiving hole. The pin hole is used to receive the insertion of the pin. The push rod is slidably connected in the first receiving hole, and the pin hole communicates with the first receiving hole. The driving component is used to drive the push rod to reciprocate to lock or release the push rod onto the pin.

[0007] As a further improvement to the above technical solution, the driving component includes a piston, a spring, a screw plug, and a pneumatic assembly. A second receiving hole is provided in the pin seat. The second receiving hole is coaxial with the first receiving hole, and the diameter of the second receiving hole is larger than the diameter of the first receiving hole. One end of the second receiving hole communicates with one end of the first receiving hole to form a countersunk hole. The piston is slidably connected to the second receiving hole. The spring is disposed within the second receiving hole. One end of the piston is connected to one end of the push rod. The other end of the second receiving hole is provided with an internal thread. The screw plug is threaded onto the internal thread. Both ends of the spring abut against the piston and the screw plug, respectively. The pneumatic assembly is used to drive the piston to move along the compression direction of the spring.

[0008] As a further improvement to the above technical solution, the piston divides the second receiving hole into a first chamber close to the first receiving hole and a second chamber away from the first receiving hole. The spring is located in the second chamber. The pin seat is provided with a first air intake channel and a first exhaust channel. One end of the first air intake channel and the first exhaust channel are both connected to the outside of the pin seat, and the other end of the first air intake channel and the first exhaust channel are both connected to the first chamber. The pneumatic assembly includes a first air intake end for connecting the first air intake channel and a first exhaust end for connecting the first exhaust channel.

[0009] As a further improvement to the above technical solution, the piston divides the second receiving hole into a first chamber close to the first receiving hole and a second chamber away from the first receiving hole. The spring is located in the second chamber. The pin seat is provided with a second air intake channel and a second exhaust channel. One end of the second air intake channel and the second exhaust channel are both connected to the outside of the pin seat, and the other end of the second air intake channel and the second exhaust channel are both connected to the second chamber. The pneumatic assembly includes a second air intake end for connecting the second air intake channel and a second exhaust end for connecting the second exhaust channel.

[0010] As a further improvement to the above technical solution, the piston divides the second receiving hole into a first chamber near the first receiving hole and a second chamber away from the first receiving hole. The spring is located in the second chamber. The pin seat is provided with a first air intake channel, a first exhaust channel, a second air intake channel, and a second exhaust channel. One end of the first air intake channel, the first exhaust channel, the second air intake channel, and the second exhaust channel are all connected to the outside of the pin seat. The other end of the first air intake channel and the first exhaust channel are all connected to the first chamber. The other end of the second air intake channel and the second exhaust channel are all connected to the second chamber. The pneumatic assembly includes a first air intake end for connecting to the first air intake channel, a second air intake end for connecting to the second air intake channel, a first exhaust end for connecting to the first exhaust channel, and a second exhaust end for connecting to the second exhaust channel.

[0011] As a further improvement to the above technical solution, a first limiting groove is provided at one end of the piston, and a second limiting groove is provided at one end of the screw plug. The first limiting groove and the second limiting groove respectively limit the two ends of the spring.

[0012] As a further improvement to the above technical solution, the axial direction of the pin hole is perpendicular to the axial direction of the first receiving hole.

[0013] As a further improvement to the above technical solution, the pin is provided with a third receiving hole for accommodating the insertion of the push rod.

[0014] As a further improvement to the above technical solution, the insertion end of the push rod is provided with a guide cone surface.

[0015] As a further improvement to the above technical solution, a first mounting plate is provided at one end of the pin, the first mounting plate is installed on the inner side of the cover plate, a second mounting plate is provided on one side of the pin seat, the second mounting plate is fixed to the inner wall of the box by bolts, and the second mounting plate is provided with at least two oblong holes, the width of the oblong holes being greater than the diameter of the bolt shank and smaller than the diameter of the bolt head.

[0016] The beneficial effects of this utility model are as follows: This utility model provides a concealed locking device. By setting the pin on the inside of the cover plate and setting the pin seat on the inner wall of the box, when the cover plate is closed, the pin is inserted into the pin hole. Then, the driving component drives the push rod into the pin hole, so that the push rod is locked on the pin, thereby achieving the locking between the cover plate and the box. At this time, the entire locking device is completely hidden in the closed space between the cover plate and the box, thus preventing the locking device from being exposed, preventing the locking device from being damaged or illegally disassembled, and improving the confidentiality of the core components of the equipment. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure provided in Embodiment 1 of this utility model;

[0019] Figure 2 This is a partial exploded view provided in Embodiment 1 of this utility model;

[0020] Figure 3 This is a cross-sectional view provided in Embodiment 1 of this utility model;

[0021] Figure 4 This is a cross-sectional view from another perspective provided in Embodiment 1 of this utility model;

[0022] Figure 5 yes Figure 1 A sectional view of the center pin seat;

[0023] Figure 6 This is a cross-sectional view provided in Embodiment 2 of this utility model;

[0024] Figure 7 This is a cross-sectional view provided in Embodiment 3 of this utility model.

[0025] Reference numerals: 1-box body, 2-cover plate, 3-pin, 31-third receiving hole, 4-pin seat, 41-pin hole, 42-first receiving hole, 43-second receiving hole, 44-first air intake channel, 45-first exhaust channel, 46-transition plane, 47-second air intake channel, 48-second exhaust channel, 5-push rod, 51-guide cone surface, 6-driving component, 61-piston, 62-spring, 63-screw plug, 611-first limiting groove, 631-second limiting groove, 7-first mounting plate, 8-second mounting plate, 81-waist-shaped hole. Detailed Implementation

[0026] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0027] Example 1

[0028] Reference Figures 1 to 5 The present invention provides a concealed locking device in embodiment 1, comprising a pin 3, a pin seat 4, a push rod 5, and a driving member 6. The pin 3 is disposed on the inner side of the cover plate 2, and the pin seat 4 is disposed on the inner wall of the housing 1. The pin seat 4 is provided with a pin hole 41 and a first receiving hole 42. The pin hole 41 is used to receive the insertion of the pin 3. The push rod 5 is slidably connected in the first receiving hole 42. The pin hole 41 communicates with the first receiving hole 42. The driving member 6 is used to drive the push rod 5 to reciprocate so as to lock or release the push rod 5 on the pin 3.

[0029] When the cover plate 2 is closed, the pin 3 is inserted into the pin hole 41. Then, the drive component 6 drives the push rod 5 into the pin hole 41, so that the push rod 5 is locked onto the pin 3, thereby locking the cover plate 2 and the housing 1. At this time, the entire locking device is completely hidden in the closed space between the cover plate 2 and the housing 1, thus preventing the locking device from being exposed, preventing the locking device from being damaged or illegally disassembled, and improving the confidentiality of the core components of the equipment.

[0030] When it is necessary to open the cover plate 2, the driving component 6 drives the push rod 5 to exit the pin hole 41, the push rod 5 separates from the pin 3, releases the constraint on the pin 3, and the pin 3 can be released from the pin hole 41 along with the cover plate 2, thereby unlocking the cover plate 2 from the box body 1.

[0031] In some preferred embodiments, the number of concealed locking devices is four, wherein the four pins 3 are located at the four corners of the inner side of the cover plate 2, and the four pin seats 4 are located at the four corners of the inner wall of the box body 1, thereby improving the locking strength and further enhancing the anti-theft performance.

[0032] In some preferred embodiments, the drive component 6 includes a piston 61, a spring 62, a screw plug 63, and a pneumatic assembly (not shown in the figures). A second receiving hole 43 is provided in the pin seat 4. The second receiving hole 43 is coaxial with the first receiving hole 42. The diameter of the second receiving hole 43 is larger than the diameter of the first receiving hole 42. One end of the second receiving hole 43 communicates with one end of the first receiving hole 42 to form a countersunk hole. The piston 61 is slidably connected to the second receiving hole 43. The spring 62 is disposed in the second receiving hole 43. One end of the piston 61 is connected to one end of the push rod 5. The other end of the second receiving hole 43 is provided with an internal thread. The screw plug 63 is threaded onto the internal thread. The two ends of the spring 62 abut against the piston 61 and the screw plug 63, respectively. The pneumatic assembly is connected to the pin seat 4. The pneumatic assembly is used to drive the piston 61 to move along the compression direction of the spring 62.

[0033] During assembly, one end of the push rod 5 is connected to one end of the piston 61. The push rod 5 and the piston 61 are placed into the countersunk hole, so that the piston 61 is slidably connected to the second receiving hole 43. Then, the spring 62 is placed into the second receiving hole 43. Then, the screw plug 63 is threaded onto the internal thread to block one end of the second receiving hole 43. At this time, the two ends of the spring 62 abut against the piston 61 and the screw plug 63 respectively. The spring 62 will be pre-compressed by a certain amount to provide initial elastic force. The spring 62 pushes out the piston 61 and the push rod 5. The transition plane 46 of the countersunk hole limits the piston 61, and the push rod 5 enters the pin hole 41.

[0034] Before the cover plate 2 is closed, the pneumatic assembly is activated. The pneumatic assembly drives the piston 61 to move along the compression direction of the spring 62. The spring 62 is compressed, and the push rod 5 exits the pin hole 41, so that the pin hole 41 can accommodate the insertion of the pin 3.

[0035] When the cover plate 2 is closed, the pin 3 is inserted into the pin hole 41. The external force applied by the pneumatic component is removed, and the spring 62 returns to its initial state. The spring 62 drives the piston 61 and the push rod 5 to push out, so that the push rod 5 enters the pin hole 41 and is locked on the pin 3, thus achieving the locking between the cover plate 2 and the housing 1.

[0036] When it is necessary to open the cover 2, the pneumatic assembly is activated. The pneumatic assembly drives the piston 61 to move along the compression direction of the spring 62. The spring 62 is compressed, the push rod 5 exits the pin hole 41, the push rod 5 separates from the pin 3, and the constraint on the pin 3 is released. The pin 3 can then be released from the pin hole 41 along with the cover 2, thereby unlocking the cover 2 from the housing 1.

[0037] Therefore, the pneumatic assembly only needs to be activated before the cover plate 2 is closed and when the cover plate 2 is opened. After the cover plate 2 is closed and for the rest of the time, the pneumatic assembly stops working. By using the spring 62 to drive the piston 61 and the push rod 5 out, the push rod 5 is always locked on the pin 3. This reduces the air supply time, significantly reduces energy consumption, and ensures the stability of locking.

[0038] Furthermore, the piston 61 divides the second receiving hole 43 into a first chamber near the first receiving hole 42 and a second chamber away from the first receiving hole 42. The spring 62 is located in the second chamber. The pin seat 4 is provided with a first intake passage 44 and a first exhaust passage 45. One end of the first intake passage 44 and the first exhaust passage 45 are connected to the outside of the pin seat 4, and the other end of the first intake passage 44 and the first exhaust passage 45 are connected to the transition plane 46 of the countersunk hole, so that the first intake passage 44 and the first exhaust passage 45 are connected to the first chamber. The pneumatic assembly includes a first intake end for connecting the first intake passage 44 and a first exhaust end for connecting the exhaust passage 45, which can form a closed-loop air circuit system.

[0039] Understandably, during unlocking, the pneumatic assembly introduces compressed air into the first chamber through the first air intake channel 44, increasing the pressure in the first chamber and driving the piston 61 to move towards the spring 62. The piston 61 drives the push rod 5 to move, causing the push rod 5 to exit the pin hole 41 and separate from the pin 3. At this time, the spring 62 is compressed and stores energy. During locking, the pneumatic assembly stops introducing compressed air, and the high-pressure gas in the first chamber is discharged through the first exhaust channel 45 to release the pressure. The elastic potential energy of the spring 62 is released, and the spring 62 drives the piston 61 to move in the opposite direction. The piston 61 drives the push rod 5 to reset and lock onto the pin 3, completing the locking.

[0040] Furthermore, a sealing ring (not shown in the attached figure) is provided between the push rod 5 and the first receiving hole 42, thereby preventing high-pressure gas in the first chamber from leaking out from the gap between the push rod 5 and the first receiving hole 42, improving the sealing performance of the pneumatic system and enhancing the stability during unlocking.

[0041] Furthermore, a first limiting groove 611 is provided at one end of the piston 61, and a second limiting groove 631 is provided at one end of the screw plug 63. The first limiting groove 611 and the second limiting groove 631 respectively limit the two ends of the spring 62, thereby preventing the spring 62 from radially shifting during compression or reset, ensuring that the axis of the spring 62 is consistent with the direction of movement of the piston 61, and improving stability.

[0042] In some preferred embodiments, the axial direction of the pin hole 41 is perpendicular to the axial direction of the first receiving hole 42, so that the push rod 5 locks the pin 3 in the vertical direction, thereby improving the stability of the locking.

[0043] Furthermore, the pin 3 is provided with a third receiving hole 31 for accommodating the insertion of the push rod 5. The hole and shaft cooperate to form a mechanical interlock, which can effectively disperse the shearing force, improve the reliability of the lock and the stability of the structure, and thus improve the anti-theft performance.

[0044] Furthermore, the insertion end of the push rod 5 is provided with a guide cone surface 51. When the push rod 5 is not coaxial with the third receiving hole 31, during the process of inserting the push rod 5 into the third receiving hole 31, the guide cone surface 51 of the push rod 5 contacts the edge of the opening of the third receiving hole 31, and the guide cone surface 51 guides the pin 3 to correct the position deviation, so that the push rod 5 is coaxial with the third receiving hole 31, and the push rod 5 smoothly enters the third receiving hole 31.

[0045] In some preferred embodiments, a first mounting plate 7 is provided at one end of the pin 3, and the first mounting plate 7 is installed on the inner side of the cover plate 2, thereby facilitating the installation of the pin 3.

[0046] It should be noted that the first mounting plate 7 and the cover plate 2 can be connected by welding or by fasteners, and no specific limitation is made in this embodiment of the utility model.

[0047] In some preferred embodiments, a second mounting plate 8 is provided on one side of the pin seat 4. The second mounting plate 8 is fixed to the inner wall of the housing 1 by bolts, which facilitates the installation and disassembly of the pin seat 4.

[0048] Furthermore, the second mounting plate 8 is provided with at least two oblong holes 81. The width of the oblong holes 81 is greater than the diameter of the bolt shank and less than the diameter of the bolt head, thereby facilitating the adjustment of the position of the sensing plate pin seat 4 so that the pin hole 41 in the pin seat 4 is aligned with the pin 3.

[0049] Example 2

[0050] Reference Figure 6 The difference between Embodiment 2 and Embodiment 1 lies in the different methods of air intake and exhaust.

[0051] Specifically, the piston 61 divides the second receiving hole 43 into a first chamber near the first receiving hole 42 and a second chamber away from the first receiving hole 42. The spring 62 is located in the second chamber. The pin seat 4 is provided with a second intake passage 47 and a second exhaust passage 48. One end of the second intake passage 47 and the second exhaust passage 48 are connected to the outside of the pin seat 4, and the other end of the second intake passage 47 and the second exhaust passage 48 are connected to the second chamber. The pneumatic assembly includes a second intake end for connecting the second intake passage 47 and a second exhaust end for connecting the second exhaust passage 48, which can form a closed-loop air circuit system.

[0052] Understandably, during unlocking, the pneumatic assembly draws air into the second chamber through the second exhaust channel 48, creating a negative pressure in the second chamber. The pressure difference between the first and second chambers drives the piston 61 to move towards the spring 62. The piston 61 moves the push rod 5, causing it to exit the pin hole 41 and separate from the pin 3. At this time, the spring 62 is compressed and stores energy. During locking, the pneumatic assembly stops drawing air and introduces gas through the second air intake channel 47, releasing the negative pressure in the second chamber until it matches the air pressure in the first chamber. At this time, the elastic potential energy of the spring 62 is released, and the spring 62 drives the piston 61 to move in the opposite direction. The piston 61 drives the push rod 5 to reset and lock onto the pin 3, completing the locking.

[0053] Example 3

[0054] Reference Figure 7 The difference between Embodiment 3 and Embodiments 1 and 2 lies in the different methods of air intake and exhaust.

[0055] Specifically, the piston 61 divides the second receiving hole 43 into a first chamber near the first receiving hole 42 and a second chamber away from the first receiving hole 42. The spring 62 is located in the second chamber. The pin seat 4 is provided with a first intake channel 44, a first exhaust channel 45, a second intake channel 47, and a second exhaust channel 48. One end of the first intake channel 44, the first exhaust channel 45, the second intake channel 47, and the second exhaust channel 48 are all connected to the outside of the pin seat 5. The other end of the first intake channel 44 and the first exhaust channel 45 are all connected to the first chamber. The other end of the second intake channel 47 and the second exhaust channel 48 are all connected to the second chamber. The pneumatic assembly includes a first intake end for connecting the first intake channel 44, a second intake end for connecting the second intake channel 47, a first exhaust end for connecting the first exhaust channel 45, and a second exhaust end for connecting the second exhaust channel 48.

[0056] Understandably, during unlocking, the pneumatic assembly introduces compressed air into the first chamber through the first air intake channel 44, creating positive pressure in the first chamber. Simultaneously, the pneumatic assembly draws air into the second chamber through the second exhaust channel 48, creating negative pressure in the second chamber. The pressure difference between the first and second chambers drives the piston 61 to move towards the spring 62. The piston 61 moves the push rod 5, causing it to exit the pin hole 41 and separate from the pin 3. At this time, the spring 62 is compressed and stores energy. During locking, the pneumatic assembly stops introducing compressed air into the first chamber, and the high-pressure gas in the first chamber is discharged through the first exhaust channel 45 to release pressure. Simultaneously, the pneumatic assembly stops drawing air into the second chamber and introduces gas into the second chamber through the second air intake channel 47, releasing the negative pressure in the second chamber until it is the same as the air pressure in the first chamber. At this time, the elastic potential energy of the spring 62 is released, and the spring 62 drives the piston 61 to move in the opposite direction. The piston 61 drives the push rod 5 to reset and lock onto the pin 3, completing the locking.

[0057] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A concealed locking device, characterized in that, The device includes a pin, a pin seat, a push rod, and a driving component. The pin is located on the inner side of the cover plate, and the pin seat is located on the inner wall of the housing. The pin seat has a pin hole and a first receiving hole. The pin hole is used to receive the insertion of the pin. The push rod is slidably connected in the first receiving hole, and the pin hole communicates with the first receiving hole. The driving component is used to drive the push rod to reciprocate so as to lock or release the push rod on the pin.

2. The concealed locking device according to claim 1, characterized in that, The driving component includes a piston, a spring, a screw plug, and a pneumatic assembly. A second receiving hole is provided within the pin seat. The second receiving hole is coaxial with the first receiving hole, and the diameter of the second receiving hole is larger than the diameter of the first receiving hole. One end of the second receiving hole communicates with one end of the first receiving hole to form a countersunk hole. The piston is slidably connected to the second receiving hole. The spring is disposed within the second receiving hole. One end of the piston is connected to one end of the push rod. The other end of the second receiving hole is provided with an internal thread. The screw plug is threaded onto the internal thread. Both ends of the spring abut against the piston and the screw plug, respectively. The pneumatic assembly is used to drive the piston to move along the compression direction of the spring.

3. A concealed locking device according to claim 2, characterized in that, The piston divides the second receiving hole into a first chamber near the first receiving hole and a second chamber away from the first receiving hole. The spring is located in the second chamber. The pin seat is provided with a first air intake channel and a first exhaust channel. One end of the first air intake channel and the first exhaust channel are both connected to the outside of the pin seat. The other end of the first air intake channel and the first exhaust channel are both connected to the first chamber. The pneumatic assembly includes a first air intake end for connecting the first air intake channel and a first exhaust end for connecting the first exhaust channel.

4. A concealed locking device according to claim 2, characterized in that, The piston divides the second receiving hole into a first chamber near the first receiving hole and a second chamber away from the first receiving hole. The spring is located in the second chamber. The pin seat is provided with a second air intake channel and a second exhaust channel. One end of the second air intake channel and the second exhaust channel are both connected to the outside of the pin seat. The other end of the second air intake channel and the second exhaust channel are both connected to the second chamber. The pneumatic assembly includes a second air intake end for connecting the second air intake channel and a second exhaust end for connecting the second exhaust channel.

5. A concealed locking device according to claim 2, characterized in that, The piston divides the second receiving hole into a first chamber near the first receiving hole and a second chamber away from the first receiving hole. The spring is located in the second chamber. The pin seat is provided with a first air intake channel, a first air exhaust channel, a second air intake channel, and a second air exhaust channel. One end of the first air intake channel, the first air exhaust channel, the second air intake channel, and the second air exhaust channel are all connected to the outside of the pin seat. The other end of the first air intake channel and the first air exhaust channel are all connected to the first chamber. The other end of the second air intake channel and the second air exhaust channel are all connected to the second chamber. The pneumatic assembly includes a first air intake end for connecting to the first air intake channel, a second air intake end for connecting to the second air intake channel, a first air exhaust end for connecting to the first air exhaust channel, and a second air exhaust end for connecting to the second air exhaust channel.

6. A concealed locking device according to claim 2, characterized in that, One end of the piston is provided with a first limiting groove, and one end of the screw plug is provided with a second limiting groove. The first limiting groove and the second limiting groove respectively limit the two ends of the spring.

7. A concealed locking device according to claim 1, characterized in that, The axial direction of the pin hole is perpendicular to the axial direction of the first receiving hole.

8. A concealed locking device according to claim 1, characterized in that, The pin is provided with a third receiving hole for accommodating the insertion of the push rod.

9. A concealed locking device according to claim 8, characterized in that, The insertion end of the push rod is provided with a guide cone surface.

10. A concealed locking device according to claim 1, characterized in that, One end of the pin is provided with a first mounting plate, which is installed on the inner side of the cover plate. A second mounting plate is provided on one side of the pin seat. The second mounting plate is fixed to the inner wall of the box by bolts. The second mounting plate is provided with at least two oblong holes, the width of which is greater than the diameter of the bolt shank and smaller than the diameter of the bolt head.

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