CN100535373C - Safety buckle device - Google Patents

Abstract

A safety locking device belongs to the technical field of lock application. It includes a pair of upper and lower lock shells which are respectively used to be arranged on the cover and the box body and have upper and lower lock shell cavities respectively; an upper lock hook is fixed in the upper lock shell cavity, and a buckle is bent at the lower end Joint part; an eccentric lock seat, the middle part is fixed in the lower lock housing cavity, and corresponds to the upper lock hook, and a pair of arms are bent on both sides; a spring shaft, the middle part is set under the pair of arms On the through hole of the through hole, the two ends are clamped into the blocking hole above the arm after passing through the through hole; an eccentric lock is hinged in the middle of the spring shaft, corresponding to and can be attached to the eccentric lock seat On, it is matched with the fastening part of the above-mentioned locking hook. Advantages: The upper and lower lock hooks interact to form the ultimate sealing effect between the box cover and the box body; the cooperation of the upper lock hook and the lower lock hook can enlarge the connection between the box body and the box cover, It is beneficial to protect the service life of the entire locking device.

Description

Safety lock device

technical field

The invention relates to a safety locking device, which is used for fastening and fixing a cover and a body, for example, the cover and the box body of various toolboxes with severe usage requirements, and belongs to the technical field of lock application.

Background technique

Chinese Invention Patent Publication No. CN1573002A discloses the technical scheme of the toolbox rotary latch applied by U.S. Ria Tong Company, which is based on U.S. Patent No. Issue), US5884948 (issued on March 23, 1999) the improvement that can't be applied to the drawback that uses the strict toolbox that exists and proposes. The core is to engage (cooperate) with the latch device through the strike pin that is spread out horizontally on the cover of the toolbox, so that the key that makes the lock cylinder member turn can be inserted into the handle from the front of the latch mechanism, and when the lock cylinder member rotates to the lock When the tool box is in the closed position, the tool box is latched so as to be locked, so as to prevent the locking lever from releasing the strike pin and ensure the locking effect. This scheme only pays attention to the bolting effect of the lock itself, but neglects the sealing effect between the box cover and the box body in the locked state; in the locked state, especially when the toolbox is in the carrying state, due to the The cover and the box body are formed as a whole only by the rotary latch, and the load of the rotary latch is often large and easy to cause damage; There is a risk of the lock being separated from the box body or the box cover and falling off; the overall structure is relatively complicated.

Chinese Patent Authorization Announcement No. CN2258219Y, CN2758032Y, CN2705278Y respectively disclosed toolbox lockset, toolbox with lock structure, and toolbox fastener structure respectively. CN2258219Y Utilizes the opening/closing of the number wheel to enable the pusher body to move or position freely, to control the effect of whether the plate button body can be turned, so as to achieve the control of locking and unlocking by the way of number wheel alignment, and has a certain anti-theft effect; Another example is that the design ideas of CN2758032Y and CN2705278Y are roughly similar, and the fastener structure has been reasonably improved. However, the above-mentioned patent still has four deficiencies mentioned by the applicant in CN1573002A.

People are paying more and more attention to the airtightness (lip effect) between the lid of the toolbox and the box body in the locked state, otherwise not only will moisture invade the tools in the box in the standby state, but also For rain, snow, fog and other environments must be doubly harsh protection. At present, people don't seem to be picky about whether the lock on the toolbox has an excellent anti-theft effect. Instead, it is often possible to make the lock reliably combined with the toolbox for a long time without separation, thereby prolonging the service life and simple structure and opening/locking. It is convenient and quick to close.

To sum up, for the development of locks or locking devices of various structures on the toolbox, few Chinese domestic enterprises have paid attention to and tried it. For example, the four patents mentioned above were issued by the United States and China Taiwan Applications, especially the products currently available in the market are almost imported.

Contents of the invention

The task of the present invention is to provide a safety lock device with a long service life, simple structure and convenient opening/locking, which can ensure an excellent sealing effect between the box body and the box cover.

The task of the present invention is accomplished in this way, a safety lock device, which includes a pair of upper and lower lock housings that are respectively used to be configured on the cover and the box body and have upper and lower lock bright cavities 11, 21 respectively. 1, 2; an upper lock hook 5, fixed in the upper lock housing cavity 11, with a fastening portion 51 bent at the lower end; an eccentric lock seat 4, the middle part is fixed in the lower lock housing cavity 21, and is locked with the upper lock Corresponding to the hook 5, there are a pair of arms 41 bent on both sides; a spring shaft 6, the middle part of which is passed through the through hole 411 below the pair of arms 41, and the two ends are stuck to the through hole 411 after passing through the through hole 411. In the blocking hole 412 above the arm 41, an eccentric lock 3 is hinged in the middle of the spring shaft 6, corresponding to and can be attached to the eccentric lock seat 4, and connected to the lock hook 5 described above. The fastening parts 51 are hooked together.

The eccentric lock 3 of the present invention includes a lower lock hook 31 with an eccentric pin slot hole 312, the upper end of the lower lock hook 31 is bent with a folding portion 311, and the folding portion 311 faces the buckling portion 51 and mutually Hook matching; a lower lock hook seat 32 with an eccentric disc hole 321 is pivotally placed on the spring shaft 6, and a pair of lower lock hooks 31 are bent on the two sides of the lower lock hook seat 32 and can be inserted. The sliding groove 323 that slides up and down, the lower end of the lower lock hook seat 32 is curled into a spring shaft hole 322 that is pivotally matched with the middle part of the spring shaft 6, and an eccentric disk hole that is used to be configured on the lower lock hook seat 32 The base 35 at the position 321, the side of the base 35 facing the eccentric disk hole 321 is recessed with a cavity 354, the bottom of the cavity 354 is provided with a first eccentric pin hole 351 and a pivot post 353 respectively, A pair of positioning grooves 352 are formed on the cavity wall of the cavity 354; a reed 34 integrally accommodated in the cavity 354 has a pair of reed feet 341, a pair of positioning holes 342, a first pivot hole 343 and The eccentric hole 344, a pair of reed feet 341 are seated on the pair of positioning grooves 352, the first pivot hole 343 is sleeved on the pivot 353, and the eccentric hole 344 corresponds to the first eccentric pin hole 351; An eccentric disc 33 is stacked on the base 35, and is integrally located in the eccentric disc hole 321, and has a second eccentric pin hole 331, a second pivot post hole 333 and a pair of reed positioning flanges 332, the second The eccentric pin hole 331 corresponds to the first eccentric pin hole 351, the second pivot post hole 333 is sleeved on the pivot post 353, and a pair of reed positioning flanges 332 are respectively extended in a pair of positioning holes 342; The button 36 has a pair of positioning feet 361, and the pair of positioning feet 361 are pivoted on a pair of positioning grooves 352; an eccentric pin 37 passes through the eccentric pin slot hole 312, the second eccentric pin hole 331, and the eccentric hole 344 in sequence Then penetrate into the first eccentric pin hole 351 .

The buckling portion 51 of the present invention is substantially L-shaped.

The folding portion 311 of the present invention is substantially L-shaped.

The eccentric pin slot hole 312 described in the present invention is an oval slot hole.

One of the advantages of the present invention is that the folding portion 311 on the lower locking hook 31 of the eccentric lock 3 can be fastened with the fastening portion 51 on the upper locking hook 5, and under the rotation of the rotary knob 36, the upper and lower The lower lock hooks 5 and 31 interact to form an extreme sealing effect between the box cover and the box body, so that the tools in the box can avoid moisture invasion and prevent rainwater, fog, etc. from invading the box and causing harm to the tools; Two, by the cooperation of the upper locking hook 5 and the lower locking hook 31, the connection position of the safety locking device of the present invention between the casing and the case cover can be enlarged, which is beneficial to protect the service life of the entire locking device; The opening/closing operation is labor-saving and convenient, and the structure is simple.

Description of drawings

The accompanying drawing is a structural diagram of a preferred embodiment of the present invention.

Detailed ways

The following examples will be more helpful to understand the essence of the present invention, but the examples should not be regarded as constituting a limitation to the technical solution of the present invention.

In the accompanying drawings, the applicant also shows a box body 71 and a box cover 72 constituting the tool box 7, which are used as carriers for the safety locking device of the present invention. The material of the upper lock case 1 of the present invention is preferably metal, which is stamped into shape by a punching equipment. When stamping, the upper lock case cavity 11 and the mounting hole 12 are formed on the upper lock case 1 thereupon. The mounting hole 12 is used To fix the upper lock case 1 to the case cover 72, it is realized by rivets or other similar methods. The upper lock hook 5 is riveted to the middle part of the upper lock housing cavity 11 by a rivet, and of course the upper lock hook 5 can also be welded and fixed in the upper lock hook cavity 11 by welding. The lower end of the upper locking hook 5 is bent to form an L-shaped or semicircular fastening portion 51, which can cooperate with the folding portion 311 on the lower locking hook 31 to be mentioned below.

The material of the lower lock housing 2 of the present invention is homogeneous to the material of the upper lock housing 1, that is, metal is preferably used, and similarly formed by stamping equipment. When forming, the lower lock housing cavity 21 and the fixing hole 22 are formed accordingly Shaped, the fixing hole 22 is used for fixing with the box body 71 . The middle part of the eccentric lock seat 4 is riveted with the lower lock housing cavity 21 with a rivet 42, or welded by welding. 5 corresponds. As can be seen from the figure, the two sides of the eccentric lock seat 4 are substantially vertically bent to form a pair of arms 41, and the upper and lower parts of the pair of arms 41 are respectively provided with a blocking hole 412 and a through hole 411. The middle part of the spring shaft 6 is inserted through the through hole 411 , and the spring feet 62 at both ends of the spring shaft 6 penetrate into the locking hole 412 after forming at least one spiral coil 61 .

As the eccentric lock 3 of the present invention, the lower lock hook 31 it includes is provided with an elliptical eccentric pin slot 312 in a horizontal direction or in a transverse form. Width is exactly the displacement range of eccentric pin 37, is example with the position shown in the figure, when eccentric pin 37 moves from left to right then just makes lower locking hook 31 descend by it, otherwise then ascends. The center of the lower lock hook seat 32 is an eccentric disk hole 321, which is used to accommodate the eccentric disk 33 and move around the hole. The two sides of the lower lock hook seat 32 are respectively bent to form a pair of generally U-shaped sliding grooves 323 , the lower locking hook 31 is inserted into the sliding groove 323 . Obviously, the function of a pair of slide grooves 323 is to provide guide grooves for the lower lock hook 31 to move up and down, and the spring shaft hole 322 curled into the bottom of the lower lock hook seat 32 is used to pass through the The middle part of the spring shaft 6. In order to ensure that the lower lock hook seat 32 after the lower lock hook 31 is inserted can be pasted on the eccentric lock seat 4, the distance between the pair of arms 41 bent from both sides of the eccentric lock seat 4 should be Make sure that the movement of the lower shackle seat 32 cannot be restricted.

As the base 35 of the eccentric lock 3, there is a cavity 354, the bottom wall (part) of the cavity 354 is respectively provided with a first eccentric pin hole 351 and a pivot post 353 is extended, and on the cavity body of the cavity 354 A pair of positioning slots 352 are defined. When the base 35 is arranged at the position of the eccentric disc hole 321, the eccentric disc hole 321 is covered by the base 35, that is, the wall of the cavity 354 of the base 35 is closely attached to the eccentric disc hole 321 on the surrounding walls. The reed 34 is completely accommodated in the base 35 by the pair of reed feet 341 seated on the pair of positioning grooves 352 and the first pivot hole 343 nested on the pivot 353. in the cavity 354. The eccentric disc 33 is stacked on the mouth of the cavity 354, and a pair of spring positioning flanges 332 of the eccentric disc 33 are stretched in a pair of positioning holes 342 to realize the positioning of the reed 34, and the eccentric disc 33 The second pivot hole 333 is also sleeved on the pivot 353. At this time, the second eccentric pin hole 331 of the eccentric disk 33 coincides with the eccentric hole 344, and the entire eccentric disk 33 can be seated on the The eccentric disc hole 321 is in contact with the surface of the lower locking hook 31 at the position corresponding to the eccentric pin slot hole 312 . One end of the eccentric pin 37 forms an extension part 371 with the left end of the position shown in the figure. 331. After the eccentric hole 344 reaches and passes through the first eccentric pin hole 351, its end is riveted to the base 35. The rotary knob 36 is preferably processed into a dish shape, and is pivoted to the positioning groove 352 of the base 35 by means of a pair of positioning feet 361 thereon. In this way, when the rotary knob 36 is rotated forward/reversely, the base 35 can be rotated forward/reversely by the rotary knob 36, and the reed 34 and the eccentric disk 33 are rotated accordingly, so that the eccentric pin 37 can move leftward along the eccentric pin slot hole 312. , right displacement, finally make the lower locking hook 31 slide up and down along the sliding groove 323, reflecting whether the upper and lower locking hooks 5, 31 are engaged or not.

The applicant briefly describes the use process of the present invention by taking the example shown in the accompanying drawings as an example. It is known from the figure that because the various parts of the eccentric lock 3 are mainly organically connected as a whole by the eccentric pin 37, the eccentric lock 3 The structural connection with the eccentric lock seat 4 is reflected by the spring shaft hole 322 at the lower end of the lower lock hook seat 32 pivoting to the spring shaft 6, and the locking/unlocking of the upper and lower lock hooks 5, 31 is through the buckle part 51 It is achieved by snapping/separating from the hinged part 311. Therefore, assuming that the case cover 72 and the case body 71 are in the locked state by the safety lock device of the present invention and the lock is to be applied, then, as long as the rotary knob 36 previously attached to the base 35 is pulled upwards by 90° by hand, That is to say, pull it to the general state shown in the drawings, and then rotate the rotary knob 36 about 180° counterclockwise. In this process, the base 35 is driven counterclockwise by a pair of positioning feet 361 of the rotary knob Rotate the same angle of about 180 ° in the clockwise direction, because the reed 34 and the eccentric disc 33 are nested on the pivot post 353 in the form of overlapping with each other, and a pair of reed positioning flanges 332 of the eccentric disc 33 are positioned on the Therefore, when the base 35 rotates, the reed 34 and the eccentric disc 33 rotate accordingly. Because the eccentric pin 37 passes through the eccentric pin grooved hole 312, the second eccentric pin hole 331, the eccentric hole 344 successively and passes through the first eccentric pin hole 351 of the base 35, and also constitutes a connection with the base 35. The riveting relationship between the eccentric pin 37 and the base 35 referred to here means that the right end of the eccentric pin 37 (in terms of the position in the drawing) passes through the first eccentric pin hole 351 to form a connection with the base. Riveting between 35. Thus, during the rotation process of the aforementioned corresponding parts, the eccentric pin 37 is gradually displaced from the left end of the eccentric pin slot hole 312 to the right end, and then displaced from the right end to the middle. The process of rotating in the disc hole 321 is the process of the lower locking hook 31 moving up along a pair of sliding grooves 323, and after the lower locking hook 31 moves up, it loses its previous gap between the folding part 311 and the buckling part 51. At this time, as long as the rotation group 36 is pulled outward with a little force, the lower lock hook seat 32 is tilted outward with the spring shaft 6 as the axis, that is, it is withdrawn from the eccentric Lock seat 4, the case lid 72 of this moment just can be opened. The action of locking is just the opposite of the foregoing, first to apply force slightly to the rotating group 36 or directly to the base 35, that is, to push the rotary knob 36 or the base 35, so that the lower lock hook seat 32 is withdrawn from the previous backward position. The state of the eccentric lock seat 4 becomes the state of sticking to the eccentric lock seat 4, and due to the effect of the spiral ring 61 at the two ends of the spring shaft 6 and the effect of the spring foot 62, the lower hook seat 32 can be close to the eccentric lock. The effect on the seat 4 is that the folding part 311 just corresponds to the top of the fastening part in the state at this time, and as the rotary knob 36 is rotated clockwise to make a 180° rotation, the eccentric pin 37 will move from the original location of the eccentric pin. The middle position of the slot hole 312 is displaced to the right, and then to the left to the limit, and at this time, the lower locking hook 31 just moves down to the limit, so that the folding part 311 and the buckling part 51 of the lower locking hook 31 are hooked to the plate. To a consistent degree, an excellent airtightness is achieved between the case cover 72 and the case body 71. Finally, the rotary knob 36 is moved up or down by 90°, so that it abuts against the lower lock hook seat 32 or a pair of arms 41 .

Claims (5)

1. A safety locking device, characterized in that it comprises a pair of upper and lower lock housings ( 1), (2); an upper lock hook (5), fixed in the upper lock housing cavity (11), the lower end is bent to form a fastening part (51); an eccentric lock seat (4), fixed in the middle In the lower lock housing cavity (21), corresponding to the upper lock hook (5), a pair of arms (41) are bent on both sides; a spring shaft (6), the middle part of which is passed through the pair of arms ( 41) On the through hole (411) at the lower side, the two ends are clamped into the locking hole (412) at the upper side of the arm (41) after passing through the through hole (411); an eccentric lock (3), hinged The middle part of the spring shaft (6) corresponds to and can be attached to the eccentric lock seat (4), and is matched with the fastening part (51) of the locking hook (5). 2. The safety locking device according to claim 1, characterized in that the eccentric lock (3) includes a lower hook (31) with an eccentric pin slot (312), and the lower hook (31) There is a folded portion (311) bent at the upper end of the upper end, and the folded portion (311) faces the fastening portion (51) and is hooked with each other; a lower lock seat (32) with an eccentric disc hole (321), the pivot Placed on the spring shaft (6), the two sides of the lower lock hook seat (32) are bent with a pair of sliding grooves (323) for the insertion of the lower lock hook (31) and can slide up and down, The lower end of the lower lock hook seat (32) is curled into a spring shaft hole (322) that is used to pivotally match with the spring shaft (6) middle part; The base (35) at the position of 321), the side of the base (35) facing the eccentric disk hole (321) is concavely provided with a cavity (354), and the bottom of the cavity (354) is respectively provided with a first eccentric The pin hole (351) and a pivot post (353) are extended, and a pair of positioning grooves (352) are formed on the cavity wall of the cavity (354); a reed (34) integrally accommodated in the cavity (354) ), with a pair of reed feet (341), a pair of positioning holes (342), a first pivot hole (343) and an eccentric hole (344), a pair of reed feet (341) is located on the one On the positioning groove (352), the first pivot post hole (343) is sleeved on the pivot post (353), and the eccentric hole (344) corresponds to the first eccentric pin hole (351), an eccentric disc (33), It is stacked on the base (35), and is integrally located in the eccentric plate hole (321), respectively having a second eccentric pin hole (331), a second pivot post hole (333) and a pair of reed positioning flanges ( 332), the second eccentric pin hole (331) corresponds to the first eccentric pin hole (351), the second pivot post hole (333) is sleeved on the pivot post (353), and a pair of reed positioning flanges ( 332) are respectively extended and placed in a pair of positioning holes (342); a rotary knob (36) has a pair of positioning feet (361), and a pair of positioning feet (361) are pivoted on a pair of positioning grooves (352); An eccentric pin (37) passes through the eccentric pin slot hole (312), the second eccentric pin hole (331), and the eccentric hole (344) in sequence, and then penetrates into the first eccentric pin hole (351). 3. The safety locking device according to claim 1 or 2, characterized in that the shape of the locking portion (51) is substantially L-shaped. 4. The safety locking device according to claim 2, characterized in that the shape of the folded portion (311) is substantially L-shaped. 5. The safety locking device according to claim 2, characterized in that the eccentric pin slot (312) is an oval slot.

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