Balanced door lock device

Abstract

The utility model discloses a balanced door lock device, which belongs to the technical field of reagent storage cabinet accessories and comprises a lock body, a lock cylinder, a handle and a lock plate. The lock cylinder is arranged in the lock body, and the two ends of the lock cylinder extend out of the front end and the rear end of the lock body respectively. The handle is hinged to a lock cylinder at the front end of the lock body through a hinge shaft. The lock plate is arranged on the lock cylinder at the rear end of the lock body. The handle and the lock cylinder are hinged through the hinge shaft, the handle can be rotated to drive the lock cylinder to rotate so as to enable the lock plate to extend out, the handle can be turned over with the hinge shaft as the center to pull the lock cylinder to move axially, and therefore the lock plate can move and abut against the inner wall of a lock catch on a door frame. The door body and the door frame of the equipment are tightly abutted by the locking plate, the locking force is increased, and the door body is prevented from loosening.

Description

TECHNICAL FIELD

[0001] The utility model relates to reagent storage cabinet accessory technical field, concretely relates to a balanced door lock device. BACKGROUND

[0002] In some reagent storage cabinet and other equipment with high sealing requirement, the traditional mechanical lock used between the door body and the door frame generally adopts a single action locking structure, for example, a lock piece is directly driven to retract or extend to realize locking by rotating a handle. Such structure has the following defects: the lock piece and the lock catch are only fixed by inserting, lacking of elastic compensation mechanism, and the locking is easily failed due to the vibration of the door body (such as the door body of the transportation equipment is unlocked by itself in the bumpy road) ; since the size of the lock catch is larger than that of the lock piece, the traditional lock structure cannot generate continuous lateral pressure, so that there is a certain gap between the door body and the door frame, reducing the sealing performance of the equipment. SUMMARY

[0003] In view of the above technical deficiencies, the utility model aims at providing a balanced door lock device, by designing a handle and a lock core, the lock piece can be tightly pressed against the inner side of the lock catch, and the door body can be tightly pressed against the door frame.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: the utility model provides a balanced door lock device, which comprises:

[0005] A lock body, which is hollow inside;

[0006] A lock core, which is arranged in the lock body, and the two ends of the lock core extend out of the front end and the rear end of the lock body;

[0007] A handle, which is hinged to the lock core at the front end of the lock body through a hinge shaft;

[0008] A lock piece, which is arranged on the lock core at the rear end of the lock body;

[0009] When the handle rotates around the center line of the lock core, the lock piece is inserted into the lock catch; when the handle rotates around the hinge shaft, the lock core moves towards the handle, so that the lock piece tightly presses against the inner wall of the lock catch.

[0010] Preferably, the lock core comprises a stepped shaft and a shaft sleeve arranged on the stepped shaft, the shaft sleeve is in sliding fit with the lock body, and one end of the stepped shaft is rotatably installed in the shaft sleeve.

[0011] Preferably, a stepped hole is arranged in the lock body, and the part of the stepped shaft in the stepped hole is sleeved with a spring.

[0012] Preferably, the handle is sleeved on one end of the hinge shaft and is provided with a cam part, when the handle rotates around the hinge shaft and the cam part abuts against the lock body, the stepped shaft compresses the spring and moves along the axial direction of itself.

[0013] Preferably, a flat part is arranged on the handle beside the cam part, and when the flat part abuts against the lock body, the stepped shaft maintains the compressed spring state.

[0014] Preferably, a through slot perpendicular to the stepped shaft is arranged on the shaft sleeve, and the lock piece is slidingly arranged on the through slot.

[0015] Preferably, an eccentric boss is fixed to one end of the stepped shaft in the shaft sleeve, and a limiting slot slidingly matched with the eccentric boss is arranged on the lock piece.

[0016] Preferably, a sliding slot is arranged in the lock body, the length direction of the sliding slot is parallel to the axial line of the stepped shaft, and a sliding block slidingly arranged in the sliding slot is arranged on the shaft sleeve.

[0017] Preferably, a first annular slot is arranged in the shaft sleeve, a second annular slot is arranged on the stepped shaft, and a snap spring is arranged in the second annular slot, and the snap spring abuts against the first annular slot and the second annular slot under the elastic action.

[0018] Preferably, a stop edge is arranged on one end of the lock body close to the handle, and limiting planes are arranged on both sides of the lock body.

[0019] The utility model discloses the beneficial effect lies in:

[0020] The handle and the lock core are hinged through the hinge shaft, the handle can be rotated, the handle drives the lock core to rotate, the lock piece is stretched out, the handle can be flipped around the hinge shaft, the handle drives the lock core to move axially, the lock piece can move and abut against the inner wall of the lock catch on the door frame, the door body and the door frame of the equipment are abutted by the lock piece, the locking force is increased, the door body is prevented from loosening, the handle with the cam part is designed, the spring is sleeved in the lock core, when the handle is rotated around the hinge shaft, the spring can be compressed to balance the locking force of the cam part, and the locking force generated when the lock core moves is prevented from being too large. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the premise of the drawings.

[0022] Figure 1 It is a front view of the balanced door lock device provided by the embodiments of the utility model.

[0023] Figure 2 It isFigure 1 Cross-sectional view at A-A.

[0024] Figure 3 It is the internal structure schematic view of the utility model in the lock state.

[0025] Figure 4 It is the perspective view of the whole structure rear view angle of the utility model.

[0026] Figure 5 It is the whole structure front view of the utility model in the lock state.

[0027] Figure 6 It is the internal structure schematic view of the utility model in the lock state.

[0028] Explanation of reference signs:

[0029] 1, lock body, 2, lock cylinder, 3, handle, 4, lock piece, 5, articulated shaft, 6, stepped shaft, 7, shaft sleeve, 8, spring, 9, cam portion, 10, flat portion, 11, through slot, 12, eccentric boss, 13, limit slot, 14, sliding slot, 15, clamping spring, 16, baffle. Specific implementation

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] Embodiment one:

[0032] As Figures 1 to 6The utility model discloses a balanced door lock device, including lock body 1, lock core 2, handle 3 and lock piece 4. Lock body 1 adopts aluminium alloy casting and forms hollow cavity, and the front end is equipped with baffle 16, is used for resisting the lock hole surface on the door body, and the both sides of lock body 1 are designed to limit plane, when lock body 1 is inserted into the lock hole of the door body, lock body 1 will not rotate in the lock hole. The hollow cavity in lock body 1 is in the form of stepped hole, and the inner wall of the cavity with larger diameter is equipped with sliding slot 14. Lock core 2 includes stepped shaft 6 and the shaft sleeve 7 of the larger diameter one end of stepped shaft 6, and the smaller diameter one end of stepped shaft 6 is inserted into the stepped hole of lock body 1 after being equipped with spring 8 and extends from the front end of lock body 1, and spring 8 is resisted by the larger diameter part of stepped shaft 6 and the baffle 16 of lock body 1. The sliding block designed on the shaft sleeve 7 and sliding slot 14 slide fit. Because the length direction of sliding slot 14 is parallel to the axis of stepped shaft 6, so the shaft sleeve 7 has the freedom of sliding in the lock body 1 with the axial sliding of stepped shaft 6, but is limited to rotate ability.

[0033] Handle 3 is located at the front end outside lock body 1 and is hinged with the front end of stepped shaft 6 through hinged shaft 5, and the axis of hinged shaft 5 is perpendicular to the axis of lock core 2. Lock piece 4 is slidably installed on the lock sleeve. When handle 3 rotates around the axis of lock core 2, lock piece 4 is inserted into the lock catch on the door frame; when handle 3 is turned around hinged shaft 5, cam portion 9 on handle 3 pushes lock core 2 to move axially and compresses spring 8, so that lock piece 4 forms surface contact with the inner wall of the lock catch, and the door frame and the door body are tightly pressed, thereby increasing the sealing property of the equipment door body.

[0034] Embodiment two:

[0035] On the basis of embodiment one, the utility model further puts forward the linkage structure of lock piece 4 and stepped shaft 6 in embodiment two. In this embodiment two, the cam portion 9 of handle 3 is designed as an elliptical surface. The end of shaft sleeve 7 away from handle 3 extends from the tail of lock body 1 and is provided with a through slot 11, and the extension direction of through slot 11 is perpendicular to the axis of shaft sleeve 7. Lock piece 4 is slidably installed on through slot 11 and extends out of the both ends of through slot 11. The end of stepped shaft 6 away from handle 3 is located in the rotating sleeve and is fixed with eccentric boss 12, and lock piece 4 is provided with limiting slot 13, and eccentric boss 12 and limiting slot 13 form a sliding pair. When handle 3 is rotated, stepped shaft 6 is rotated by handle 3, eccentric boss 12 slides in limiting slot 13 and pushes lock piece 4 to move in through slot 11, thereby realizing the linkage between the rotation of handle 3 and lock piece 4.

[0036] The place close to cam portion 9 on handle 3 is designed with flat portion 10, when handle 3 is turned around hinged shaft 5, so that cam portion 9 passes between hinged shaft 5 and baffle 16, stepped shaft 6 compresses spring 8, flat portion 10 is attached to baffle 16 of lock body 1, so that spring 8 maintains the compressed state, and the stable state of lock piece 4 is maintained.

[0037] Embodiment three:

[0038] On the basis of embodiment one and embodiment two, the embodiment three further proposes the connecting structure between the stepped shaft 6 and the shaft sleeve 7. The first annular groove is arranged on the inner wall of the shaft sleeve 7, and the second annular groove is arranged on the corresponding position of the stepped shaft 6. First, the snap spring 15 is sleeved in the second annular groove, then the snap spring 15 is compressed and the stepped shaft 6 is inserted into the rotating sleeve until the second annular groove moves to the position of the first annular groove, at this time the snap spring 15 is inserted into the first annular groove under the elastic action. Since the width of the snap spring 15 is greater than the depth of the first annular groove, the snap spring 15 is in the first annular groove and the second annular groove at the same time, so that the position of the rotating sleeve in the axial direction of the stepped shaft 6 is limited, and the rotating connection of the rotating sleeve and the stepped shaft 6 is realized.

[0039] Working principle: when the door body is not locked, the flat part 10 and the cam part 9 of the handle 3 are not in contact with the blocking edge 16 at the front end of the lock body 1, and the lock piece 4 is not inserted into the lock catch. At this time, the door body can be freely opened and closed, and the lock piece 4 will not interfere with the door frame lock catch.

[0040] When the door needs to be locked, the door body is closed, and the handle 3 is held to rotate 90 degrees around the center of the shaft line of the lock core 2, driving the stepped shaft 6 to rotate synchronously. At this time, the eccentric boss 12 at the end of the stepped shaft 6 drives the lock piece 4 to move along the through groove 11 of the shaft sleeve 7 through the limiting groove 13, so that the lock piece 4 is inserted into the insertion slot of the door frame lock catch to complete the preliminary locking. At this time, although the locking of the door frame and the door body is completed, there is no abutting force between the door body and the door frame.

[0041] Then, the handle 3 is turned up around the hinge shaft 5 as the center, so that the cam part 9 of the handle 3 abuts against the front end surface of the blocking edge 16 of the lock body 1, forcing the stepped shaft 6 to move axially to the handle 3 direction against the elastic force of the spring 8, driving the lock piece 4 to further displace laterally to the inner wall of the lock catch, generating an abutting force to make the door body abut against the door frame. At this time, the cam part 9 is separated from the blocking edge 16, and the flat part 10 abuts against the front end of the blocking edge 16, balancing the locking force through the elastic deformation of the spring 8 to prevent the abutting force from being too large.

[0042] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model belong to the scope of the utility model claims and their equivalent technologies, the utility model also intends to include these modifications and variations.

Claims

1. A balanced door closer device, characterised in that, The utility model relates to a lock, which comprises: a lock body with an internal cavity; a lock cylinder arranged in the lock body, with two ends of the lock cylinder extending out of the front end and the rear end of the lock body respectively; a handle hinged to the lock cylinder at the front end of the lock body through a hinge shaft; a lock piece arranged on the lock cylinder at the rear end of the lock body; when the handle rotates around the center line of the lock cylinder, the lock piece is inserted into a lock catch; when the handle rotates around the hinge shaft, the lock cylinder moves towards the handle, so that the lock piece abuts against the inner wall of the lock catch.

2. A balanced door closer as claimed in claim 1, characterised in that The lock cylinder comprises a stepped shaft and a shaft sleeve sleeved on the stepped shaft, the shaft sleeve is in sliding fit with the lock body, and one end of the stepped shaft is rotatably installed in the shaft sleeve.

3. A balanced door closer as claimed in claim 2, wherein A stepped hole is formed in the lock body, and the portion of the stepped shaft in the stepped hole is sleeved with a spring.

4. A balanced door closer as claimed in claim 3, wherein A cam portion is arranged at one end of the hinge shaft of the handle, when the handle rotates around the hinge shaft and the cam portion abuts against the lock body, the stepped shaft compresses the spring and moves along the axial direction of the stepped shaft.

5. A balanced door closer as claimed in claim 4, wherein the spring is arranged to bias the door closer towards the closed position. 5 A flat portion is arranged on the handle beside the cam portion, when the flat portion abuts against the lock body, the stepped shaft maintains the state of compressing the spring.

6. A balanced door closer as claimed in claim 2, wherein A through groove perpendicular to the stepped shaft is formed in the shaft sleeve, and the lock piece is slidably installed in the through groove.

7. A balanced door closer as claimed in claim 6, wherein An eccentric boss is fixed to one end of the stepped shaft in the shaft sleeve, and a limiting groove in sliding fit with the eccentric boss is formed in the lock piece.

8. A balanced door closer as claimed in claim 2, wherein A sliding groove is formed in the lock body, the length direction of the sliding groove is parallel to the center line of the stepped shaft, and a sliding block arranged in the sliding groove is arranged on the shaft sleeve.

9. A balanced door closer as claimed in claim 2, wherein A first annular groove is formed in the shaft sleeve, a second annular groove is formed in the stepped shaft, a snap spring is arranged in the second annular groove, and the snap spring abuts against the first annular groove and the second annular groove under the action of elasticity.

10. A balanced door closer as claimed in claim 1, wherein A stop edge is arranged at one end of the lock body close to the handle, and limiting planes are arranged on both sides of the lock body.

Images