Latching structure of small safe deposit box

Abstract

The utility model discloses a latching structure of a small safe deposit box, which comprises a sliding plate restrained on the back of a box door, a latch head is arranged at the right end of the sliding plate, and a driving structure for driving the sliding plate to slide left and right is arranged on the box door; the sliding plate is provided with a left cross beam, an upper cross beam and a lower cross beam, the upper cross beam and the lower cross beam are located on the right side of the left cross beam and are arranged in an up-down spaced mode, and the gear seat is relatively fixed to the back face of the box door and located between the upper cross beam and the lower cross beam; the transmission gear is installed on the gear seat and can be selected around the axis of the transmission gear, a driving shaft of the rotary knob penetrates through the front face of the box door and is connected with the transmission gear in an inserted mode, so that rotation of the rotary knob can drive the transmission gear to rotate, and a rack part meshed with the transmission gear is arranged on the upper beam or the lower beam. The device has the advantages of more compact structure and stable and labor-saving transmission.

Description

Technical Field

[0001] The utility model relates to a locking structure for a safe box door, in particular to a latching structure for a small safe deposit box. Background Art

[0002] The existing safe door locking structure includes a driving device arranged on the door panel and a latching structure that closes and opens the door through the driving device. The latching structure generally includes a slide plate, a latch head connected to the slide plate and other components, and the assembly relationship is complicated, and the overall cost of the latching structure is high. For the safe door used in daily life, how to improve its economical and practical use is a problem that ordinary families are more concerned about.

[0003] For example, a Chinese utility model patent "Four-sided bolting mechanism for safe door" with patent number ZL200920117151.X (publication number CN201381698Y) discloses such a mechanism, including a door panel, a front slide connected with a front bolt head, an upper slide connected with an upper bolt head at the upper end, and a lower slide connected with a lower bolt head at the lower end; the front end of the connecting plate is connected to the front slide via a front transmission pin, and the rear end of the connecting plate is connected to the rear slide via a rear transmission pin. A driving mechanism for driving the front slide to move laterally is provided on the door panel, and the driving mechanism for driving the front slide to move laterally is: a fork that is rotatably arranged on the back of the door panel and driven to rotate by a key or a handle, and the other end of the fork is hinged to the waist-shaped hole on the front slide via a driving pin. In this fork transmission mode, the fork must be arranged beside the front slide, which will cause the entire bolting structure to be not compact and not suitable for small safe deposit boxes. In addition, the fork transmission has poor stability, is easily stuck, and is laborious to transmit.

[0004] In summary, the existing latch structure is not suitable for small safe deposit boxes. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a latching structure suitable for small safe deposit boxes with a more compact structure, stable transmission and labor-saving in view of the above-mentioned existing technical status.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a latching structure of a small safe deposit box, including a slide plate constrained on the back of the box door and capable of moving left and right, a latch head is provided at the right end of the slide plate, and a driving structure for driving the slide plate to slide left and right is provided on the box door; it is characterized in that: the driving structure includes a gear seat, a transmission gear, and a knob, the slide plate has a left crossbeam, an upper crossbeam and a lower crossbeam, the upper crossbeam and the lower crossbeam are located on the right side of the left crossbeam and are arranged at intervals up and down, the gear seat is relatively fixed on the back of the box door and is located between the upper crossbeam and the lower crossbeam, the transmission gear is installed on the gear seat and can be selected around its own axis, the driving shaft of the knob passes through the front of the box door and is plugged into the transmission gear, so that the rotation of the knob can drive the transmission gear to rotate, and a rack portion meshing with the transmission gear is provided on the upper crossbeam or the lower crossbeam.

[0007] A further improvement includes a cover having an installation cavity with an open lower end, the cover is fixed to the back of the box door, the box door covers the opening of the cover, the slide is constrained in the installation cavity and can move left and right, a through hole for the bolt head to pass through is opened on the right side wall of the cover, and the gear seat is fixed in the installation cavity. During assembly, the main components of the bolt structure can be pre-installed in the cover, and then the cover with the bolt structure installed can be fixed to the back of the box door, and finally the drive shaft of the knob is passed through the front of the box door and plugged into the transmission gear to complete the installation. The modular installation of the upper and lower bolt structures makes installation more convenient.

[0008] As an improvement, the above skateboard further has a right crossbeam, which is connected between the rear ends of the upper crossbeam and the lower crossbeam. The left crossbeam, the right crossbeam, the upper crossbeam and the lower crossbeam form a rectangular frame structure to enhance the overall strength of the skateboard.

[0009] In order to facilitate the quick installation of the transmission gear on the gear seat, the center of the gear seat has a first installation through hole, and the top surface of the transmission gear has at least two first elastic arms extending upward, and the first elastic arms pass through the first installation through hole and then buckle on the top of the gear seat. During installation, it is only necessary to pass the first elastic arm through the first installation through hole and buckle on the top of the gear seat to complete the installation of the transmission gear on the gear seat, and ensure that the transmission gear can rotate around its own axis relative to the gear seat.

[0010] As an improvement, the cross section of the driving shaft of the knob is flat, the top of the driving shaft has two second elastic arms spaced apart, the transmission gear has a second mounting through hole whose shape matches the driving shaft, the driving shaft is inserted into the second mounting through hole and the second elastic arm is buckled on the transmission gear. This structure makes it easy to install the knob on the transmission gear. When installing, just insert it upwards, and the second elastic arm will automatically buckle the transmission gear to complete the installation. The shape of the second mounting through hole in the transmission gear matches the flat hole of the driving rod, so that the rotation of the knob can drive the transmission gear to rotate.

[0011] As a further improvement, a top column with an arc bottom surface is fixed on the gear seat, and a plurality of pits arranged at intervals along the circumference are provided on the upper surface of the transmission gear, and the bottom surface of the top column matches the pits. The bottom surface of the top column matches the pits so that the rotation of the knob has a sense of jerking gear.

[0012] In order to better constrain the slide plate in the installation cavity of the cover, the slide plate is provided with convex guide ribs arranged in the left and right directions at the upper and lower ends, the bottom surface of the cover is provided with support ribs extending outward, the slide plate is placed on the support ribs, and the bottom surface of the cover is also provided with retaining ribs arranged at intervals up and down, and the retaining ribs are arranged outside the guide ribs. The slide plate is constrained by the rib-groove matching method to ensure that the slide plate can be more stably placed in the cover and can only slide left and right.

[0013] As an improvement, the outer end surface of the cover is provided with a plurality of hooks, which enable the cover to have a hanging function, and valuables such as necklaces or keys can be hung on the back of the box door.

[0014] In order to facilitate the slide plate to cooperate with the lock, the slide plate is provided with a raised locking protrusion for forming a blocking match with the lock tongue of the lock. Due to the raised locking protrusion, the lock can be arranged in a front-to-back misaligned manner with the slide plate, and the lock can be arranged behind the slide plate without blocking the slide plate from sliding. The overall layout is more compact and more suitable for small safe deposit boxes.

[0015] Compared with the prior art, the advantages of the utility model are: the driving structure includes a gear seat, a transmission gear, and a knob, the transmission gear and the slide plate form a gear and rack transmission mode, and the gear and rack transmission has the advantage of smooth transmission; importantly, the gear seat is relatively fixed to the back of the box door and is located between the upper and lower beams, and the transmission gear is installed on the gear seat. It can be understood that the entire transmission structure is located inside the slide plate as a whole, which makes the entire latching structure more compact and suitable for use in small safe deposit boxes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front three-dimensional structure of an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the back three-dimensional structure of an embodiment of the utility model;

[0018] Figure 3 It is a cross-sectional view of an embodiment of the utility model along the length direction of the door;

[0019] Figure 4 It is a cross-sectional view of an embodiment of the utility model along the height direction of the box door;

[0020] Figure 5 This is a schematic diagram of the drive structure of the utility model embodiment installed in the cover;

[0021] Figure 6 It is a three-dimensional exploded view of the driving part in the embodiment of the utility model. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] See also Figures 1 to 6 Shown is a preferred embodiment of the utility model.

[0024] A latching structure for a small safe deposit box comprises a slide plate 2 which is restrained on the back of a box door 1 and can move left and right. A latch head 4 is arranged at the right end of the slide plate 2. The box door 1 is provided with a driving structure for driving the slide plate 2 to slide left and right.

[0025] The driving structure includes a gear seat 3, a transmission gear 5, and a knob 6. The slide plate 2 has a left crossbeam 2a, an upper crossbeam 2b, a lower crossbeam 2c, and a right crossbeam 2d. The upper crossbeam 2b and the lower crossbeam 2c are located on the right side of the left crossbeam 2a and are arranged at intervals from top to bottom. The right crossbeam 2d is connected between the rear ends of the upper crossbeam 2b and the lower crossbeam 2c. The left crossbeam 2d, the left crossbeam 2a, the upper crossbeam 2b, and the lower crossbeam 2c form a rectangular frame structure. The gear seat 3 is relatively fixed on the back of the box door 1 and is located between the upper crossbeam 2b and the lower crossbeam 2c. The transmission gear 5 is installed on the gear seat 3 and can be selected around its own axis. The driving shaft 61 of the knob 6 passes through the front of the box door 1 and is plugged with the transmission gear 5, so that the rotation of the knob 6 can drive the transmission gear 5 to rotate. The upper crossbeam 2b or the lower crossbeam 2c is provided with a rack portion 21 meshing with the transmission gear 5.

[0026] The cover 7 is also provided with a mounting cavity Q with an open lower end. The cover 7 is fixed to the back of the box door 1. The box door 1 covers the opening of the cover 7. The outer end surface of the cover 7 is provided with a plurality of hooks 73. The slide plate 2 is constrained in the mounting cavity Q and can move left and right. A through hole 74 for the latch head 4 to pass through is provided on the right side wall of the cover 7. The gear seat 3 is fixed in the mounting cavity Q.

[0027] The upper and lower ends of the skateboard 2 are provided with outwardly protruding guide ribs 22 arranged in the left and right directions, and the bottom surface of the cover 7 is provided with outwardly extending support ribs 71. The skateboard 2 is placed on the support ribs 71. The bottom surface of the cover 7 is also provided with retaining ribs 72 arranged at intervals up and down, and the retaining ribs 72 are blocked outside the guide ribs 22.

[0028] The center of the gear seat 3 has a first mounting through hole 31, and the top surface of the transmission gear 5 has at least two first elastic arms 51 extending upward, and the first elastic arms 51 pass through the first mounting through hole 31 and are buckled on the top of the gear seat 3. The cross section of the driving shaft 61 of the knob 6 is flat, and the top of the driving shaft 61 has two second elastic arms 62 arranged at intervals. The transmission gear 5 has a second mounting through hole 52 whose shape matches the driving shaft, and the driving shaft 61 passes through the second mounting through hole 52 and the second elastic arm 62 is buckled on the transmission gear 5.

[0029] A top column 8 with an arc bottom surface is fixed on the gear seat 3 . A plurality of concave pits 53 arranged at intervals along the circumference are provided on the upper surface of the transmission gear 5 . The bottom surface of the top column 8 matches with the concave pits 53 .

[0030] The slide plate 2 is provided with a protruding locking protrusion 23 for forming a blocking fit with the locking tongue 91 of the lock 9 .

[0031] By turning the knob 6, the transmission gear 5 is driven to rotate forward or reversely. Since the rack portion 21 on the upper beam 2b or the lower beam 2c is meshed with the transmission gear 5, the slide plate 2 is driven to slide left and right. The transmission mode of the gear rack has the advantage of smooth transmission. Since the gear seat 3 is relatively fixed to the back of the box door 1 and is located between the upper beam 2b and the lower beam 2c, the transmission gear 5 is installed on the gear seat 3. It can be understood that the entire transmission structure is located inside the slide plate 2 as a whole. This makes the entire latching structure more compact and suitable for use in small safe deposit boxes.

[0032] It should be noted that in the description of this embodiment, the terms "front, back", "left, right", "inside, outside", "upper, lower" and the like indicating directions or positional relationships are all based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. The terms "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A latching structure for a small safe deposit box, comprising a slide plate (2) constrained on the back of a box door (1) and capable of moving left and right, a latch head (4) being provided at the right end of the slide plate (2), and a driving structure for driving the slide plate (2) to slide left and right on the box door (1); characterized in that: The driving structure comprises a gear seat (3), a transmission gear (5), and a knob (6); the slide plate (2) comprises a left crossbeam (2a), an upper crossbeam (2b), and a lower crossbeam (2c); the upper crossbeam (2b) and the lower crossbeam (2c) are located on the right side of the left crossbeam (2a) and are arranged with an interval between the upper and lower crossbeams; the gear seat (3) is relatively fixed on the back side of the box door (1) and is located between the upper crossbeam (2b) and the lower crossbeam (2c); the transmission gear (5) is installed on the gear seat (3) and can be selected around its own axis; the driving shaft (61) of the knob (6) passes through the front side of the box door (1) and is plugged into the transmission gear (5), so that the rotation of the knob (6) can drive the transmission gear (5) to rotate; the upper crossbeam (2b) or the lower crossbeam (2c) is provided with a rack portion (21) meshing with the transmission gear (5).

2. The latching structure of a small safe deposit box according to claim 1, characterized in that: It also includes a cover (7) having an installation cavity (Q) with an open lower end, the cover (7) being fixed on the back of the box door (1), the box door (1) covering the opening of the cover (7), the slide plate (2) being restrained in the installation cavity (Q) and being able to move left and right, a through hole (74) for the latch head (4) to pass through is formed on the right side wall of the cover (7), and the gear seat (3) is fixed in the installation cavity (Q).

3. The latching structure of a small safe deposit box according to claim 1 or 2, characterized in that: The slide plate (2) also has a right crossbeam (2d), and the right crossbeam (2d) is connected between the rear ends of the upper crossbeam (2b) and the lower crossbeam (2c).

4. The latching structure of a small safe deposit box according to claim 1 or 2, characterized in that: The gear seat (3) has a first mounting through hole (31) at its center, and the top surface of the transmission gear (5) has at least two first elastic arms (51) extending upwards, and the first elastic arms (51) pass through the first mounting through hole (31) and are buckled on the top of the gear seat (3).

5. The latching structure of a small safe deposit box according to claim 4, characterized in that: The cross section of the driving shaft (61) of the knob (6) is flat, the top end of the driving shaft (61) is provided with two second elastic arms (62) arranged at intervals, the transmission gear (5) is provided with a second mounting through hole (52) whose shape matches the driving shaft, the driving shaft (61) is passed through the second mounting through hole (52) and the second elastic arm (62) is buckled on the transmission gear (5).

6. The latching structure of a small safe deposit box according to claim 1 or 2, characterized in that: A top column (8) with an arcuate bottom surface is fixed on the gear seat (3); a plurality of concave pits (53) arranged at intervals along the circumference are provided on the upper surface of the transmission gear (5); and the bottom surface of the top column (8) matches the concave pits (53).

7. The latching structure of a small safe deposit box according to claim 2, characterized in that: The upper and lower ends of the slide plate (2) are provided with outwardly protruding guide ribs (22) arranged in the left-right direction, the bottom surface of the cover (7) is provided with outwardly extending support ribs (71), the slide plate (2) is placed on the support ribs (71), and the bottom surface of the cover (7) is also provided with retaining ribs (72) arranged at intervals up and down, and the retaining ribs (72) are arranged outside the guide ribs (22).

8. The latching structure of a small safe deposit box according to claim 2, characterized in that: The outer end surface of the cover (7) is provided with a plurality of hook portions (73).

9. The latching structure of a small safe deposit box according to claim 1, characterized in that: The slide plate (2) is provided with a protruding locking protrusion (23) for forming a blocking fit with a locking tongue (91) of a lock (9).

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