CN102403158B - Lock cylinder combinational structure of key switch - Google Patents

Abstract

The invention discloses a combination structure of a lock core of a key switch, which comprises: a lock case with an opening accommodating space inside, and a plurality of convex ribs arranged inwardly along the opening in the accommodating space; a lock core, It is arranged in the accommodating space of the lock case, and on one end side of the lock core, there is a key hole which penetrates through each lock plate groove and can be inserted by a key. Slots, each of the lock slots can be used to accommodate different locks that match the key pattern; a longitudinal through groove is respectively provided between some adjacent lock slots; it is not penetrated by the groove Each part of the locking piece groove side forms a complete connecting part, the connecting part can keep the original complete surface shape of the lock cylinder, and can form a stable connection with the ribs of the lock housing at any rotation angle. touch. The invention can prevent the lock cylinder from being skewed and loosened in the lock case, can ensure the lock cylinder to keep stable and smooth when rotating, and can increase the service life of each component.

Description

Lock core combination structure of key switch

technical field

The invention relates to a lock core combination structure of a key switch.

Background technique

As shown in FIG. 1 , it is a lock core structure of an existing key switch, which mainly includes: a lock case 10 , a lock core 20 , a rear cover 30 and the like. Wherein said lock housing 10 is provided with a front and rear open accommodating space 101, in which a plurality of longitudinally extending convex ribs 102, 103 are provided, as shown in FIG. The rib hereinafter referred to as the first rib 103 is slightly protruding beyond the side of an opening of the accommodating space 101, while the other part of the rib hereinafter referred to as the second rib 102 can be moved from the accommodating space as required. The open end of 101 is inwardly recessed to form a notch 1021 . The lock core 20 is accommodated in the accommodating space 101 of the lock housing 10, and an axially penetrating key hole 203 is provided at one end of the lock core 20, and a direction to the outside of the key hole 203 is provided. The externally expanded ring flange 201 is used to stop on the opening of the accommodating space 101, and a convex stop 202 is provided on the inner side of the ring flange 201, and the convex stop 202 can be moved along the corresponding concave gap. The part 1021 pivots and slides, and is stopped by the protruding block 202 by the first ribs 103 on both sides thereof, so as to limit the pivoting of the lock cylinder 20 . In addition, two opposite sides of the middle section of the lock cylinder 20 are provided with a plurality of lock slots 204 extending transversely and communicating with the key hole 203 . Each lock piece slot 204 can accommodate different lock pieces 2041 matching the key tooth pattern. In addition, for the convenience of assembling, it is common to provide a longitudinally through slit 205 between the lock piece grooves 204 on one side. The longitudinal cut groove 205 will produce a vacant area 206 on the peripheral surface of the lock cylinder 20. Even if it is turned to the position corresponding to each of the first or second ribs 103, 102, there will be a very obvious gap between them, which cannot reach the desired position. Effective lateral support and positioning of the first or second ribs 103, 102 are described. In addition, an annular groove 207 for inserting the stop ring 304 is provided at the end of the lock cylinder 20 away from the ring flange 201 . A positioning groove 2071 can be formed at the intersection of the ring groove 207 and the key hole 203 . The rear cover 30 is provided with a slightly tapered driving protrusion 303 on one peripheral edge of the surface, and a locking block 302 and at least one flange 301 protruding inward are provided on the other peripheral edge of the rear cover 30 . Using the locking block 302 to snap into the positioning groove 2071 of the lock cylinder 20, and cooperate with the flange 301 to be embedded in the ring groove 207, the rear cover 30 can be combined with the lock cylinder 20, and the stop ring can be fixed. 304 , using the stop ring 304 to cooperate with the ring flange 201 to form stops at the front and rear ends of the lock housing 10 to prevent the lock cylinder 20 from slipping from the inside of the lock housing 10 to the outside.

As shown in Figures 2 and 3, it can be seen that when the above structure is in use, when the key is inserted into the keyhole 203, the lock cylinder 20 can be driven to rotate, so as to drive the driving convex part 303 of the back cover 30 to rotate, and drive the rear touch switch (not shown). drawn). As shown in Figure 2, since the rotation of the lock core 20 in the accommodating space 101 depends on the contact of each second or first rib 102, 103 with the peripheral surface side of the lock core 20, it can be kept stable. During the rotation process, since the first rib 103 protrudes beyond the opening of the accommodating space 101, it forms a support surface of different levels corresponding to the position of the second rib 102 of the lock housing 10, causing the ring flange 201 to The lower bottom surface of the bottom surface is in an unstable support state; secondly, only a thin stop ring 304 is used to stop the rear end of the lock housing 10 at the rear end of the lock core 20, which has a considerable positioning effect on the lock core 20. weak. In this way, when the vacant area 206 formed by the longitudinal slit 205 changes position with the rotation of the lock core 20 to correspond to the directions of the second or first ribs 102 and 103 respectively, the lock core 20 will The vacant area 206 cannot be effectively supported and positioned by each of the second or first ribs 102, 103, and it is easy to make the lock cylinder 20 deflect or deflect toward this side when it is operated under force, thus making the lock A non-concentric lateral deviation is formed between the core 20 and the accommodating space 101 , as shown in FIG. 3 . This sideways phenomenon will inevitably cause the lock cylinder 20 to shake back and forth and become unstable when rotating, which will not only affect the smoothness of the user's operation, but also cause the convex block 202 of the lock cylinder 20 to be too large due to the force of the lock cylinder 20. The deflection of the lock cylinder 20 and the lock housing 10 will cause the lock cylinder 20 and the lock housing 10 to be stuck or severely damaged.

In addition, since the vacant area 206 on one side of the lock cylinder 20 often forms a sharp bevel on the outer edge of the vertical cut groove 205 during processing, if the lock cylinder 20 produces the above-mentioned lateral deviation phenomenon during rotation, it will affect each The inner surface of the second or first rib 102, 103 is severely scratched. After a period of use, along with the increase and depth of scratches, the fit precision of the second or first ribs 102, 103 and the lock cylinder 20 will be reduced, resulting in the deflection of the lock cylinder 20 in the accommodating space 101 increasingly serious, reducing the durability of the lock cylinder structure.

Contents of the invention

The technical problem to be solved by the present invention is to provide a lock core combination structure of a key switch, which can prevent the lock core from skewing and loosening in the lock housing, and can ensure a stable and smooth structure when the lock core rotates. Increase the service life of each component.

In order to solve the above-mentioned technical problems, the lock core combination structure of the key switch provided by the present invention includes:

A lock housing is provided with an opening accommodating space inside, and a plurality of convex ribs are arranged inwardly along the opening in the accommodating space.

A lock cylinder is arranged in the accommodating space of the lock shell, and a keyhole is provided on one end side of the lock cylinder to pass through each lock piece groove and can be inserted by a key. Two opposite sides of the middle section of the lock cylinder are respectively There are a plurality of lock piece grooves extending transversely, each of the lock piece grooves can be used to accommodate different lock pieces matching the key tooth pattern; between the lock piece grooves adjacent to the two opposite sides A longitudinally penetrating groove is respectively provided; a complete connecting portion is formed on the side of each part of the lock piece groove not penetrated by the groove, and the connecting portion can keep the original complete surface shape of the lock cylinder periphery, And it can form a stable contact with each convex rib of the lock housing at any rotation angle.

According to the above structure, the connecting parts are arranged alternately on two opposite sides of the lock cylinder. Two opposite sides of the accommodating space are respectively provided with openings communicating with the outside, and a back cover is combined at the end of the lock core away from the keyhole, and the back cover is used to block the accommodating space on the corresponding opening. An annular groove is provided on one end of the lock cylinder away from the keyhole, and a flange that can be inserted into the annular groove is provided on a corresponding position of the rear cover.

According to the above structure, a set of neck is provided on the side of the lock core away from the key hole, for fitting an inner plug ring, and the inner plug ring is formed by the inner and outer diameters of the neck of the lock core respectively. The part and the inside of the lock housing maintain a stable plug sleeve, and the rear cover is blocked on the outer side of the inner plug ring to prevent it from slipping outward.

According to the above structure, the peripheral side of the keyhole is provided with an outwardly expanding ring flange, and at least part of each of the ribs is set to slightly protrude beyond the opening of the accommodating space as the first rib. The ring flange is held on the opening of the accommodating space by being stopped by the first rib.

According to the above structure, the bottom surface of the ring flange is provided with a protruding stopper, and an extension is provided between the bottom edge of the protruding stopper and the lock piece grooves on the two pairs of sides closest to the protruding stopper. part, the extension part can form a stable contact with the top end of the inner peripheral surface of each of the convex ribs of the lock housing.

According to the above structure, part of the inwardly recessed concave notches of the convex ribs are formed on one end side of the ring flange of the lock housing close to the lock cylinder, and each of the inwardly concave convex ribs is a second convex rib. Rib, the protruding block can pivotally slide along the position corresponding to the notch, and is stopped by the first protruding rib on the two sides of the notch, and the lock cylinder pivot is formed by the first protruding rib Turn restrictions.

The present invention can keep the peripheral side of the lock cylinder in full peripheral contact with the inner peripheral side of the accommodation space of the lock housing, that is, when the lock cylinder is at any angle, it can keep in good contact with the inner peripheral side of the accommodation space, thus ensuring The lock cylinder keeps stable and smooth when rotating, which can effectively prevent the lock cylinder from skewing and loosening. The invention can also effectively avoid sharp material edge wear caused by deflection between the lock core and the lock housing, thereby increasing the service life of each component.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

Fig. 1 is the exploded structural diagram of lock core and lock case of existing key switch;

Fig. 2 is the lock core and lock case combined sectional view one of existing key switch;

Fig. 3 is the combined sectional drawing 2 of the lock cylinder and the lock housing of the existing key switch;

Fig. 4 is a structure exploded view of the present invention;

Fig. 5 is a combined appearance diagram of the present invention;

Fig. 6 is a combined sectional view of the present invention.

Detailed ways

As shown in Figures 4 to 6, the present invention mainly includes parts such as a lock case 1, a lock cylinder 2, a back cover 3 and an inner plug ring 4, wherein the structure of the lock case 1 is substantially the same as that of the existing key switch. The lock case 10 with the lock cylinder structure is the same, that is, the interior of the lock case 1 is provided with an accommodating space 11 , and the accommodating spaces 11 are respectively provided with openings communicating with the outside on two opposite sides. In the accommodating space 11 , a plurality of parallel second protruding ribs 12 and first protruding ribs 13 are arranged inwardly along the opening. One end of the second protruding rib 12 is provided with an indented notch 121 . The lock cylinder 2 is disposed in the accommodating space 11 of the lock housing 1 , and an axially penetrating keyhole 23 is provided at one end of the lock cylinder 2 . An outwardly expanding ring flange 21 is provided on a side outside the keyhole 23 for blocking the opening of the accommodating space 11 . Two opposite sides of the middle section of the lock cylinder 2 are respectively provided with a plurality of locking piece grooves 24 extending in parallel in the transverse direction, and each locking piece groove 24 is capable of accommodating different locking pieces 241 matching the key tooth pattern. In addition, a longitudinally penetrating groove 25 is respectively provided between the partial lock piece grooves 241 on the two opposite sides. On the side of the part of the locking plate groove 24 that is not penetrated by the groove 25, a complete connecting portion 251 can be formed, and each connecting portion 251 can be arranged alternately on the two pairs of the lock cylinder 2 as required. side. Utilizing the connecting portion 251, the peripheral side of the lock cylinder 2 can maintain the original complete surface contour shape at any angle or area, that is, each second or first rib 12 of the lock housing 1. , 13, under various rotation angles of the lock cylinder 2, they can form a complete and stable contact with each other. A protruding block 22 is provided on the bottom surface of the ring flange 21, and a full-circumferential extension 26 is maintained between the bottom edge of the protruding block 22 and the closest lock piece groove 24 on both sides. The portion 26 can form a complete and stable fitting contact with the inner peripheral surface of each second or first rib 12 , 13 of the lock housing 1 . And the convex stopper 22 can pivotally slide along the position corresponding to the concave notch 121, and the convex stopper 22 is stopped by the first ribs 13 on the two rotating sides, so as to form the pivoting of the lock cylinder 2 limit. An annular groove 27 is provided at the end of the lock cylinder 2 away from the ring flange 21 , and a positioning groove 271 can be formed at the intersection of the annular groove 27 and the key hole 23 . And at the inner position of the ring groove 27, a set of neck 28 is provided. The inner plug ring 4 is arranged on one end side of the ring groove 27 corresponding to the lock core 2 in the accommodating space 11, and the inner plug ring 4 is a sleeve that fits on the lock core 2 with its inner and outer diameters respectively. The neck 28 and the corresponding lock housing 1. The rear cover 3 is provided with a slightly tapered driving protrusion 33 on one peripheral edge of the surface, and a locking block 32 protruding inward and at least one convex portion are provided on the other peripheral edge of the rear cover 3 . edge31. The locking block 32 is snapped into the positioning groove 271 of the lock cylinder 2 , and the flange 31 is inserted into the ring groove 27 , so that the rear cover 3 and the lock cylinder 2 can be combined. On the one hand, limit the position of the lock core 2 in the lock housing 1, and form a stop to the inner plug ring 4, so as to prevent the lock core 2 and the inner plug ring 4 from slipping outward from the lock housing 1, and the inner plug ring 4 can Keep the end of the lock core 2 in the center of the lock case 1 without deflection; combined with the combination of the aforementioned double-sided connecting portion 251 and the extension portion 26, the lock core 2 will be fully anti-deflection in the lock case 1 The function of oblique tacking can completely improve the defects existing in the prior art.

When the above structure is in operation, when the key is inserted into the keyhole 23, the lock cylinder 2 can be driven to rotate, so as to drive the driving convex portion 33 of the back cover 3 to rotate, and drive the touch switch (not shown) at the rear. Since the connecting portion 251 can keep the peripheral side of the lock cylinder 2 to maintain the original complete surface shape, and cooperate with the effect of the extension portion 26 against the front ends of the second or first ribs 12, 13 of the lock housing 1, During the rotation process, the lock cylinder 2 can maintain stable contact with the second or first ribs 12 and 13 of the lock case 1 through the connecting portion 251 and the extension portion 26 throughout the whole process. In addition, the strengthening and stabilizing effect of the inner plug ring 4 on the end of the lock cylinder 2 and the interior of the lock housing 1 will effectively ensure that the lock cylinder 2 remains stable and not deflected when it rotates, thereby avoiding the skew caused by the lock cylinder 2. , loosening and causing improper internal wear or jamming, which can increase the service life of each component and enhance the competitiveness of the product.

Based on the above, the combination structure of the lock cylinder of the key switch of the present invention can indeed prevent the lock cylinder from skewing, loosening and improper wear, and can ensure the quality of the unlocking operation. The content of the above description is only a description of the preferred embodiments of the present invention, and all changes, modifications, changes or equivalent replacements extended according to the technical means and scope of the present invention should also fall within the scope of the patent application of the present invention Inside.

Claims (12)

1. A lock cylinder combined structure of a key switch, characterized in that it comprises: A lock housing, which is provided with an opening accommodating space inside, and a plurality of convex ribs are arranged inwardly along the opening in the accommodating space; A lock cylinder is arranged in the accommodating space of the lock shell, and a keyhole is provided on one end side of the lock cylinder to pass through each lock piece groove and can be inserted by a key. Two opposite sides of the middle section of the lock cylinder are respectively There are a plurality of lock piece grooves extending transversely, each of the lock piece grooves can be used to accommodate different lock pieces matching the key tooth pattern; between the lock piece grooves adjacent to the two opposite sides A longitudinally penetrating groove is respectively provided; a complete connecting portion is formed on the side of each part of the lock piece groove not penetrated by the groove, and the connecting portion can keep the original complete surface shape of the lock cylinder periphery, And can form a stable contact with each rib of the lock housing at any rotation angle; The peripheral side of the key hole is provided with an outwardly expanding ring flange, and at least part of each of the ribs is set to slightly protrude beyond the opening of the accommodating space as the first rib. The first convex rib is stopped and kept on the opening of the accommodating space; A protruding block is provided on the bottom surface of the ring flange, and an extension is provided between the bottom edge of the protruding block and the two pairs of lock piece grooves closest to the protruding block. The extension part can form a stable contact with the top end of the inner peripheral surface of each of the convex ribs of the lock housing. 2 . The combination structure of the lock cylinder of the key switch according to claim 1 , wherein the connecting parts are arranged alternately on two opposite sides of the lock cylinder. 3 . 3. The lock cylinder combination structure of the key switch according to claim 1 or 2, characterized in that: two opposite sides of the accommodating space are respectively provided with openings communicating with the outside, and on the side of the lock cylinder far away from the One end of the key hole is combined with a back cover, and the back cover is used to stop on the corresponding opening of the accommodating space. 4. The lock core combination structure of the key switch as claimed in claim 3, characterized in that: a ring groove is provided on the side of the end of the lock core away from the key hole, and the rear cover is provided at the corresponding position. the flange of the annular groove. 5. The combination structure of the lock cylinder of the key switch according to claim 1 or 2, characterized in that: a set of neck is provided on the side of the end of the lock cylinder away from the keyhole for fitting an inner plug ring , the inner plug ring maintains a stable plug sleeve with the inner and outer diameters of the sleeve neck of the lock cylinder and the inside of the lock housing respectively. 6. The lock core combination structure of the key switch as claimed in claim 3, characterized in that: a set of neck is provided on the peripheral side of the end of the lock core away from the key hole for fitting an inner plug ring, the The inner plug ring maintains a stable plug sleeve with the inner and outer diameters of the sleeve neck of the lock cylinder and the inside of the lock housing respectively, and the back cover is blocked on the outer side of the inner plug ring to prevent it from slipping outward. 7. The combination structure of the lock cylinder of the key switch according to claim 4, characterized in that: a set of neck is provided on the peripheral side of the end of the lock cylinder away from the key hole for fitting an inner plug ring, so The inner plug ring maintains a stable plug sleeve with the inner and outer diameters of the sleeve neck of the lock cylinder and the inside of the lock housing respectively, and the back cover is blocked on the outer side of the inner plug ring to prevent it from slipping outwards . 8. The lock cylinder assembly structure of the key switch according to claim 1, characterized in that: on the end side of the ring flange of the lock housing close to the lock cylinder, there is a concave part in which the convex ribs are retracted inwardly. Notches, each of the inwardly retracted convex ribs is a second convex rib, and the convex block can pivot and slide along the position corresponding to the concave notch, and is affected by the first convex rib on the side of the concave notch. The rib stops, and the first convex rib is used to restrict the pivoting of the lock cylinder. 9. The combination structure of the lock cylinder of the key switch according to claim 3, characterized in that: on the end side of the ring flange of the lock housing close to the lock cylinder, there is formed a concave part of the convex rib that is inwardly retracted. Notches, each of the inwardly retracted convex ribs is a second convex rib, and the convex block can pivot and slide along the position corresponding to the concave notch, and is affected by the first convex rib on the side of the concave notch. The rib stops, and the first convex rib is used to restrict the pivoting of the lock cylinder. 10. The combination structure of the lock cylinder of the key switch according to claim 5, characterized in that: on the end side of the ring flange of the lock housing close to the lock cylinder, a concave part of the convex rib is formed inwardly. Notches, each of the inwardly retracted convex ribs is a second convex rib, and the convex block can pivot and slide along the position corresponding to the concave notch, and is affected by the first convex rib on the side of the concave notch. The rib stops, and the first convex rib is used to restrict the pivoting of the lock cylinder. 11. The combination structure of the lock cylinder of the key switch according to claim 6, characterized in that: on the end side of the ring flange of the lock housing close to the lock cylinder, there is a concave part of the convex rib that is inwardly retracted. Notches, each of the inwardly retracted convex ribs is a second convex rib, and the convex block can pivot and slide along the position corresponding to the concave notch, and is affected by the first convex rib on the side of the concave notch. The rib stops, and the first convex rib is used to restrict the pivoting of the lock cylinder. 12. The combination structure of the lock cylinder of the key switch according to claim 7, characterized in that: on the end side of the ring flange of the lock housing close to the lock cylinder, a concave part of the convex rib is formed inwardly. Notches, each of the inwardly retracted convex ribs is a second convex rib, and the convex block can pivot and slide along the position corresponding to the concave notch, and is affected by the first convex rib on the side of the concave notch. The rib stops, and the first convex rib is used to restrict the pivoting of the lock cylinder.