TWI889474B - Lock center device based on matching multiple key cross-sectional shapes, its ball slot configuration method, and its corresponding locking key - Google Patents

Abstract

The present invention provides a lock center device based on matching the cross-sectional shape of a multiple key, a method for configuring a lock ball slot thereof, and a corresponding lock key. The lock is provided with an axially oriented recessed bore, and the outer contour of the lock hole is configured as a first section contour and a second section contour after superimposition, and its’ a union outer contour; also, the teeth of the first key and the second section contour are axially offset. The lock cylinder is recessed with multiple lock ball slots at intervals along its axial direction. By adapting Thus, the invention can be adapted to existing keys with various cross-sectional profiles, the lock kernel does not need to be manufactured separately according to the cross-sectional profile of the key, thus effectively reducing its manufacturing and inventory costs; The invention also provides a method for configuring the lock ball slot so that, in response to the deviation of the position of the teeth of the keys with different cross-sectional profiles, the teeth of the keys with different cross-sectional profiles can correspond to the lock ball slot for unlocking, thus ensuring stability and effectiveness during unlocking.

Description

A lock core device based on matching multiple key cross-sectional shapes, a lock ball groove configuration method, and a corresponding key

The present invention provides a lock core device based on matching multiple key cross-sectional shapes, a lock ball groove configuration method, and a corresponding key, particularly a lock hole recessed in a lock core, the appearance of which is an outer contour of a first cross-sectional contour and a second cross-sectional contour through a superposition union, so that it can be respectively applicable to a first key with a first cross-sectional contour and a second key with a second cross-sectional contour, and the corresponding keys; and the configuration of the corresponding lock ball groove recessed in accordance with the teeth of the keys with different cross-sectional contours, so as to ensure stability and effectiveness when unlocking.

According to the standard, locks are usually installed on objects used for opening and closing, so as to achieve the effect of anti-theft and control by whether the lock is locked or not; and as for the installation of locks, most of them are installed on the objects used for opening and closing, such as the door body, so that a lock core is configured on the outside, and the lock core is provided with a key hole for inserting a key to unlock, and a knob is provided on the inside for the user to open; wherein, the lock core is assembled and transmitted to the lock body to control the opening and closing of the lock body, so that if there is no key matching the lock core, the lock core cannot be rotated to unlock.

Among them, in terms of the configuration of the key hole of the lock core, in order to allow only the corresponding key to be inserted, the existing key hole is usually configured as S-shaped, M-shaped, X-shaped, L-shaped, K-shaped, W-shaped or Y-shaped as shown in Figures 1a to 1g. It can be known that the cross-sectional shape of the key must correspond to the key hole so that it can be inserted into the corresponding lock core; and if the cross-sectional shape of the key cannot match the key hole, it will not be inserted into the key hole; through the above configuration, it is possible to prevent the mismatched key from being inserted at will, thereby achieving the effect of preventing foolishness and theft.

However, although the lock hole can initially exclude keys with mismatched cross-sectional shapes, the anti-theft performance of the lock still depends on the lock bead inside the lock core. If the lock hole is only matched with the key with the corresponding cross-sectional shape, the specifications will not be unified, and the industry will also have to manufacture and stock the lock cores according to the different shapes of the lock holes, which will cause a significant increase in the mold opening, processing, assembly and manufacturing costs, and the inventory cost will also increase accordingly, so it is not conducive to mass production; and for consumers, if the lock hole cannot meet the keys with different cross-sectional shapes, even if the lock codes of each lock are the same, it is still impossible to open the lock with different key inserts, which will cause inconvenience in key configuration.

In view of this, we, the inventors, have devoted ourselves to further research on the configuration of lock holes that can match keys of various cross-sectional shapes, and have started to carry out research and development and improvement, hoping to find a better invention to solve the above problems. After continuous testing and modification, the present invention was born.

Therefore, the purpose of the present invention is to solve the above problems. To achieve the above purpose, we inventors provide a lock core device based on matching the cross-sectional shapes of multiple keys, which is applicable to a first key with a first cross-sectional profile and a second key with a second cross-sectional profile different from the first cross-sectional profile. The lock core device includes: a lock core, which is recessed with a lock hole in an axial direction; the lock hole is used to selectively receive the first key and the second key.

According to the lock core device based on matching multiple key cross-sectional shapes as described above, the outer contour of the lock hole is configured to be greater than or equal to the outer contour of the superimposed union of the first cross-sectional contour and the second cross-sectional contour.

According to the lock core device based on matching multiple key cross-sectional shapes as described above, the first cross-sectional profile and the second cross-sectional profile are respectively S-shaped, M-shaped, X-shaped, L-shaped, K-shaped, W-shaped or Y-shaped.

According to the lock core device based on matching the cross-sectional shapes of multiple keys as described above, the lock hole is provided with a first side end on one side and a second side end on the other side, and at least one of the first side end and the second side end is provided with a receiving portion for correspondingly receiving the first key or the second key.

According to the lock core device based on matching the cross-sectional shape of multiple lock keys, the first side end has a first straight wall, the bottom end of the first straight wall is provided with a first inclined wall extending outwardly from the diameter of the lock hole, the lower end of the first inclined wall is provided with a first side wall, and the lower end of the first side wall is provided with a first supporting wall inclined inwardly from the diameter of the lock hole, and the lower end of the second supporting wall is provided with at least A first extension wall; a second straight wall corresponding to the first straight wall is disposed at the second side end, and a second inclined wall is disposed at the bottom end of the second straight wall extending outwardly from the diameter of the lock hole, a second side wall is disposed at the lower end of the second inclined wall, and a second supporting wall is disposed laterally from the lower end of the second side wall toward the diameter of the lock hole, and at least one second extension wall is disposed at the lower end of the second supporting wall.

According to the lock core device based on matching the cross-sectional shapes of multiple keys as described above, the receiving portion is a recessed portion for correspondingly locating the first key or the second key in the radial direction.

According to the lock core device based on matching multiple lock key cross-sectional shapes, the lock core is provided with a plurality of lock ball grooves at intervals along its axial direction, each lock ball groove extends along the radial direction of the lock core, and the lock ball grooves are used to respectively accommodate at least one lock ball.

The lock core device based on matching multiple cross-sectional shapes of key keys as described above further includes a sleeve, the sleeve is axially recessed with a receiving groove, and the lock core is correspondingly sleeved in the receiving groove; and the sleeve is provided with a plurality of upper bead grooves corresponding to the lock bead grooves, and the sleeve is used to respectively receive at least one upper lock bead.

According to the lock core device based on matching the cross-sectional shapes of multiple lock keys, the bushing is provided with a hollow portion corresponding to the lock ball groove at one radial end thereof; and a baffle corresponding to the lock ball groove is provided at the hollow portion.

According to the lock core device based on matching multiple key cross-sectional shapes as described above, a fixing element is further provided on the outer edge of the sleeve, and the fixing element is used to correspond to and receive the block in the hollow portion.

According to the lock core device based on matching the cross-sectional shapes of multiple lock keys, the first lock key has a plurality of teeth, the second lock key has a plurality of teeth, the lock core is provided with a plurality of lock ball grooves at intervals along its axial direction, each lock ball groove extends along the radial direction of the lock core, and the lock core device further includes a plurality of lower lock balls respectively arranged in the lock ball grooves. When either the first lock key or the second lock key is inserted into the lock hole, each lower lock ball can be driven by the corresponding teeth.

According to the lock core device based on matching the cross-sectional shapes of multiple keys as described above, the distance between the center point of the lock ball groove located in the middle and the center of the tooth position corresponding to the first key, and the distance between the center point of the lock ball groove located in the middle and the center of the tooth position corresponding to the second key are equal.

According to the lock core device based on matching multiple lock key cross-sectional shapes as described above, the lock ball grooves are arranged at equal intervals along the axial direction.

The present invention further provides a key, which includes: a lock bar, the outer contour of whose cross section corresponds to the lock hole configured by the lock core of the lock core device structure based on matching the multi-key cross-sectional shape as described in any one of claims 1 to 13.

The present invention also provides a method for configuring a lock ball groove based on matching a lock hole with multiple lock key cross-sectional shapes, the steps of which include: configuring a lock core, and the lock core has a lock hole configured to be larger than and at least including a first cross-sectional profile and a second cross-sectional profile different from the first cross-sectional profile through an overlapped union of the outer profile; and the first lock key and the second lock key are respectively configured with a plurality of corresponding teeth on one side thereof; and a lock ball groove corresponding to the teeth is recessed at one radial end of the lock core, and the lock ball groove is correspondingly connected to the lock hole.

According to the above-mentioned method for configuring the bead lock groove based on the lock hole matching the cross-sectional shape of multiple keys, the steps further include: selecting one of the bead lock grooves as a reference, and configuring the remaining bead lock grooves in an array corresponding to equal intervals, so that the projection position of the bead lock groove at least partially corresponds to the tooth portion.

According to the above-mentioned method for configuring the bead lock groove based on the lock hole matching the cross-sectional shape of multiple keys, the steps further include: selecting the bead lock groove located in the middle as the reference, so that its projection position is located at the corresponding tooth; and configuring the remaining bead lock grooves in an array with equal spacing on both sides thereof.

From the above description and configuration, it is apparent that the present invention mainly has the following advantages and effects, which are described in detail as follows:

1. The present invention can be applied to at least two keys with different cross-sectional profiles through the configuration of the lock hole, so that the lock core does not need to be manufactured separately according to the cross-sectional profile of the key, which can greatly reduce its manufacturing and inventory costs; in addition, when the user needs to replace the lock, the user does not need to replace the key separately, which can improve the convenience of replacement.

2. The present invention uses the configuration of the hollow part and the block so that when the lock code needs to be replaced, the lock core can be rotated by the key to make the lock ball groove align with the hollow part, and after removing the block, the key for updating the lock code can be inserted to replace the lock ball inside the lock core so that it can correspond to the user's key, which can facilitate the replacement or unification of the lock code. In addition, with the configuration of the aforementioned key hole, the lock can be adapted to keys with the same lock code but different cross-sectional profiles, which can facilitate the user to configure according to the use requirements, which can facilitate the management of the lock and improve the convenience when unlocking.

3. The present invention, through its configuration method of the ball groove, can respond to the deviation of the position of the teeth of the keys with different cross-sectional profiles to ensure that the teeth of the keys with different cross-sectional profiles can correspond to the ball groove for unlocking, thereby ensuring stability and effectiveness when unlocking.

1: Lock kernel

11: Keyhole

11a: First side

11b: Second side

111:First straight wall

112: First inclined wall

113: First side wall

114: The first support wall

115: First extension wall

121: Second straight wall

122: Second inclined wall

123: Second side wall

124: The second support wall

125: Second extension wall

13: Bead lock groove

131:Lower lock bead

14: Undertaking Department

2: First key

3: Second key

4: Key

41: Locking lever

5: Lining

51: Storage tank

52: Upper bead groove

53: Hollow section

531:Block

54:Fixed components

6: Teeth

R: Outer contour

L ₀ : Reference axis

L ₁ : offset axis

Figure 1a is a schematic diagram of the known S-shaped lock hole configuration.

Figure 1b is a schematic diagram of the known M-shaped lock hole configuration.

Figure 1c is a schematic diagram of the known lock hole configuration in an X shape.

Figure 1d is a schematic diagram of the known L-shaped lock hole configuration.

Figure 1e is a schematic diagram of the known lock hole configuration as K type.

Figure 1f is a schematic diagram of the known W-shaped lock hole configuration.

Figure 1g is a schematic diagram of the known Y-shaped lock hole configuration.

Figure 2 is a three-dimensional schematic diagram of the lock core and liner of the present invention.

Figure 3 is a three-dimensional exploded diagram of the lock core and lining set of the present invention.

Figure 4 is a schematic diagram showing the overlap of the first cross-sectional profile A and the second cross-sectional profile B of the present invention, and a comparison diagram of the keyhole of the present invention.

Figure 5 is a front view schematic diagram of the lock hole of the present invention.

Figure 6 is a partial cross-sectional and front view schematic diagram of the first key of the lock hole insert assembly of the present invention.

Figure 7 is a partial cross-sectional and front view schematic diagram of the second key of the lock hole insert assembly of the present invention.

Figure 8a is a schematic diagram of the receiving portion of the present invention being arranged at the first side end.

Figure 8b is a schematic diagram of the receiving portion of the present invention being arranged at the second side end.

Figure 8c is a schematic diagram of the receiving portion of the present invention being arranged at the first side end and the second side end.

Figure 9 is a three-dimensional schematic diagram of the key of the present invention.

Figure 10 is a partial cross-sectional and front view of the key insert assembly of the present invention when it is in the lock hole.

Figure 11 is a cross-sectional view of the lock core of the present invention at the lock bead groove.

Figure 12 is a cross-sectional view of the first key insert assembly of the present invention on the lock core.

Figure 13 is a cross-sectional view of the second key insert assembly of the present invention on the lock core.

Figure 14 is a three-dimensional schematic diagram of the present invention when inserting a key set to change the lock code.

Figure 15 is a three-dimensional exploded diagram of the present invention when inserting a key set to change the lock code.

Regarding the technical means of our inventors, several preferred embodiments are described in detail below with accompanying drawings, so that you can have a deeper understanding and recognize the present invention.

Please refer to FIGS. 2 to 5. The present invention is a lock core device based on matching the cross-sectional shapes of multiple keys, applicable to a first key 2 having a first cross-sectional profile A, and a second key 3 having a second cross-sectional profile B different from the first cross-sectional profile A. The lock core device comprises: a lock core 1, which is recessed with a lock hole 11 in an axial direction; the lock hole 11 is used to selectively receive the first key 2 and the second key 3; in a specific embodiment, the outer profile of the lock hole 11 is configured to be greater than or equal to the first cross-sectional profile Through the superimposed union of the outer contours of the first cross-sectional contour A and the second cross-sectional contour B, it can be known that the first cross-sectional contour A and the second cross-sectional contour B can be respectively S-shaped, M-shaped, X-shaped, L-shaped, K-shaped, W-shaped or Y-shaped as shown in Figures 1a to 1g. The cross-sectional shape configuration belongs to the known technology, so it is not described here in detail; and the configuration of the lock hole 11 is used to provide a first key 2 with the first cross-sectional contour A (as shown in Figure 6) and a second key 3 with the second cross-sectional contour B (as shown in Figure 7) for insertion.

It should be noted that the cross-sectional profile described in the present invention refers to the cross-sectional profile of the portion of the key inserted into the lock before the teeth are made.

In the present embodiment, the configuration of the key hole 11 is achieved by configuring the first cross-sectional profile A to be S-shaped as shown in FIG. 1a, and configuring the second cross-sectional profile B to be K-shaped as shown in FIG. 1e, and then superimposing them, as shown in FIG. 4 and FIG. 5, taking the outer profile R of the union, so that the key hole 11 can be adapted to the first key 2 and the second key 3 of both S-shaped and K-shaped; thereby, the configuration of the key hole 11 is achieved in a specific embodiment. In the embodiment, it has a first side end 11a and a second side end 11b on both sides, and at least one of the first side end 11a and the second side end 11b is provided with a receiving portion 14 for correspondingly receiving the first key 2 or the second key 3. The receiving portion 14 can be various geometric surfaces to support the first key 2 or the second key 3 to a certain extent. Therefore, it can be known that in this embodiment, the configuration of the receiving portion 14 is A first straight wall 111 can be disposed through the first side end 11a, a first inclined wall 112 is provided at the bottom end of the first straight wall 111 extending outwardly from the diameter of the lock hole 11, a first side wall 113 is provided at the lower end of the first inclined wall 112, and a first supporting wall 114 is provided at the lower end of the first side wall 113 inclined inwardly from the diameter of the lock hole 11, and at least one first extending wall 115 is provided at the lower end of the first supporting wall 114; and the lock hole 11 The second side end 11b is provided with a second straight wall 121 corresponding to the first straight wall 111, and a second inclined wall 122 is provided at the bottom end of the second straight wall 121 extending outwardly from the diameter of the lock hole 11, a second side wall 123 is provided at the lower end of the second inclined wall 122, and a second supporting wall 124 is provided laterally from the lower end of the second side wall 123 toward the diameter of the lock hole 11, and at least one second extension wall 124 is provided at the lower end of the second supporting wall 124. 25, and the second supporting wall 124 and the second extension wall 125 can be arranged slightly vertically; thereby, as shown in FIG. 6, when the first key 2 with the first cross-sectional profile A being S-shaped is inserted into the lock hole 11, one side of the first key 2 can be roughly correspondingly placed against the first straight wall 111, the first inclined wall 112, the first side wall 113, the first supporting wall 114 and the first extension wall 115, and can be supported by the first supporting wall 114; on the contrary, as shown in FIG. 7 As shown in the figure, when the second key 3 is inserted, the second cross-sectional profile B is K-shaped, and the side edge of the second key 3 can be placed on the second straight wall 121, the second inclined wall 122, the second side wall 123, the second supporting wall 124 or the second extension wall 125 to a certain extent; and in other embodiments, as shown in Figures 8a to 8c, the receiving portion 14 is configured as a recessed portion and is respectively configured at the first side end 11a and the second side end 11b, Or it is configured at the first side end 11a and the second side end 11b at the same time, so as to position the first key 2 or the second key 3 in the corresponding radial direction, so as to increase the supporting point and supporting area against the lock core 1 to help positioning, so that after the key is inserted into the lock core 1, the position of the lock ball in the lock core 1 can be pushed more accurately; it is obvious that the configuration of the lock hole 11 of the present invention can indeed allow the first key 2 with the first cross-sectional profile A and the second key 3 with the second cross-sectional profile B to be inserted The present invention can achieve the purpose and demand of unified specifications by eliminating the need for relevant businesses to configure the lock core 1 corresponding to the lock hole 11 for the first cross-sectional profile A and the second cross-sectional profile B respectively, thereby reducing its manufacturing and inventory costs; in addition, when the user needs to replace the lock, if the user's original key 4 is the first cross-sectional profile A or the second cross-sectional profile B, there is no need to replace the key 4 separately, and the key 4 can be directly used, which improves the convenience of replacing the lock.

In other embodiments, as shown in FIG. 9 and FIG. 10, the present invention can also be provided with a corresponding key 4 in response to the configuration of the key hole 11. Therefore, it can be known that the key 4 is provided with a lock rod 41, and its cross-sectional outer contour will be as shown in FIG. 9 and FIG. 10, corresponding to the key hole 11 of the present invention, so that it can be used exclusively for the configuration of the key hole 11 of the present invention, so that the present invention can be adapted to three different cross-sectional shapes of the key 4, thereby improving the applicability of the present invention.

As for the overall configuration of the lock core 1, it is provided with a plurality of lock ball grooves 13 at intervals along the axial direction thereof, and each lock ball groove 13 extends along the radial direction of the lock core 1; and a sleeve 5, the sleeve 5 is provided with an accommodating groove 51 axially, and the lock core 1 is correspondingly sleeved in the accommodating groove 51; and the sleeve 5 is provided with a plurality of upper bead grooves 52 corresponding to the lock ball grooves 13; therefore, it can be known that the lock ball groove 13 can be provided with a lower lock ball 131, and the upper bead groove 52 can be correspondingly provided with an upper lock ball (not shown in the figure), and the upper lock ball or the lower lock ball 131 can be respectively formed through the combination of their lengths, so as to make When the key 4 with the correct lock code is inserted into the lock hole 11, the tooth 6 corresponding to the lock ball groove 13 is arranged on the lock rod of the key, and the height of the tooth 6 is used to receive the lower lock ball 131 and push the upper lock ball in a linked manner, so that all the contact surfaces of the lower lock ball 131 and the upper lock ball correspond to the lock core 1 and are sleeved on the lining. When the connection in the sleeve 5 is opened, the lock body 1 can be rotated to unlock; and it can be known that one end of the lock body 1 relative to the lock hole 11 can be equipped with various fine-tuning nuts and driving structures (not shown in the figure) to correspondingly drive the lock tongue (not shown in the figure) inside the lock equipped with the lock body 1, so as to achieve the purpose and effect of unlocking.

As for the configuration of the ball lock groove 13, since the positions of the teeth of keys with different cross-sectional profiles may have slight deviations in the axial direction, in order to meet the requirements that the keys with different cross-sectional profiles can be inserted and effectively unlocked, the present invention further provides a method for configuring the ball lock groove 13 based on matching the lock hole 11 with multiple cross-sectional shapes of keys. In one embodiment, the first key 2 and the second key 3 having teeth are provided; and corresponding ball locks are respectively recessed radially on the lock core 1 at positions corresponding to the teeth. The grooves 13 are respectively connected to the lock holes 11; preferably, as mentioned above, in order to meet the deviation of the tooth positions of the first key 2 and the second key 3 in the axial direction, the ball lock groove 13 can be configured to have a larger aperture; and in a preferred embodiment, when drilling the ball lock groove 13, the teeth at different positions can be offset equidistantly, so that the convenience of forming the ball lock groove 13 can be improved. At the same time, the ball lock groove 13 is configured with an aperture equal to or slightly larger than the ball lock groove of the conventional lock. , and the projection position of the lock ball groove 13 can at least partially correspond to the tooth portion, so that the teeth of the first key 2 and the second key 3 can be exactly positioned in the corresponding lock ball groove 13, and can push the lower lock ball 131 arranged inside thereof accordingly; and in a preferred embodiment, since the lock ball grooves 13 are arranged at equal intervals, it is particularly important to select the lock ball groove 13 as the initial reference, and the lock ball groove 13 as the reference must be able to completely correspond to the first key 2 at its corresponding position. and the teeth of the second key 3; and if the bead groove 13 configured as the front end or the end is selected as the reference to equidistantly open the remaining bead grooves 13, it will cause the bead groove 13 at the other end to have a greater degree of deviation from the teeth of the first key 2 or the second key 3. Therefore, in this embodiment, as shown in Figures 11 to 13, since the lock code of the lock core 1 of this embodiment is five groups, the bead groove 13 located in the middle can be selected as the reference, and a reference axis _L0 can be defined so that its projection position is located at the corresponding tooth, and the offset axis _L1 is configured in an array at equidistant intervals on both sides thereof, and according to the offset axis L ₁ , the remaining lock ball grooves 13 are drilled corresponding to the positions of the first and second lock keys 2. In this way, the convenience of processing can be achieved by equidistant offset. In this configuration, the distance between the center point of the lock ball groove 13 in the middle and the center of the tooth position corresponding to the first key 2, and the distance between the center point of the lock ball groove 13 in the middle and the center of the tooth position corresponding to the second key 3 are equal. At the same time, when the lock ball grooves 13 are arranged by equidistant offset, the lock ball grooves 13 at the two ends and the tooth portions of the first key 2 or the second key 3 have no deviation, or have a smaller deviation, but can still be aligned and pushed against their corresponding lock ball grooves. The slot 13 and the lock bead 131 thereunder are used to achieve stability and effectiveness when unlocking the lock. In other embodiments, the lock code of the lock core 1 can also be configured in six groups or other numbers. In principle, when the number of lock codes is an odd number, the positions of the remaining lock bead slots 13 can be adjusted forward and backward with reference to the above steps with the lock bead slot 13 located in the middle as the reference; and when the number of lock codes is an even number, one of the two lock bead slots 13 located in the middle can be selected as the reference and the positions of the remaining lock bead slots 13 can be adjusted, or the center point between the two lock bead slots 13 in the middle can be used as the reference to adjust the positions of all the lock bead slots 13.

It should be particularly noted that, in addition to the slight deviation in the position of the teeth in the axial direction of the lock key with different cross-sectional profiles, the height standards of the lower lock beads 131 of each coding system may be slightly different due to the different coding systems adopted. In such a case, different lower lock beads 131 (such as the lower lock beads 131 with different shapes disclosed in Figures 12 and 13) need to be used in conjunction with the teeth 6 to push the lower lock beads 131 to a predetermined height so that the lock core 1 can rotate relative to the bushing 5 to achieve the purpose of unlocking. In addition to replacing the lower lock bead 131 before installing the lock core 1 on the bushing 5, it can also be replaced in the following way. As shown in FIG. 14 and FIG. 15 , in order to facilitate the user to still apply the lock code of the key originally used by the user after replacing the lock core 1 of the present invention, so as to facilitate the user to manage the lock code of the lock, in a preferred embodiment, a hollow portion 53 corresponding to the lock ball groove 13 can be configured at one radial end of the sleeve 5; and a baffle 531 that can correspond to and shield the lock ball groove 13 is provided at the hollow portion 53. As for the positioning of the baffle 531, in this embodiment, it can be The outer edge of the sleeve 5 is further provided with a fixing element 54, which can be a sticker in one embodiment, and the fixing element 54 is used to correspond to the block 531 in the hollow portion 53; thereby, after the user installs the lock core 1, the fixing element 54 and the block 531 can be removed by inserting the key corresponding to the original lock code into the lock core 1, and the lock core 1 can be rotated until its lock ball groove 13 is aligned with the hollow portion 53. At this time, the original key can be removed and the key originally used by the user can be inserted. In this process, Since the lower lock bead 131 is not restricted, the user can replace the corresponding lock code. After the replacement, the block 531 can be placed back into the hollow portion 53 and the fixing element 54 can be positioned to complete the replacement of the lock code. This configuration, in conjunction with the aforementioned lock hole 11 of the present invention, allows the present invention to be applicable to keys with different cross-sectional shapes, and can selectively maintain or change the lock code according to the use requirements, so as to achieve the convenience of the user in managing the lock code. In addition, In other embodiments, the baffle 531 can also be fixed to the hollow portion 53 in other ways. For example, the baffle 531 can be made of a plastic material and fixed to the hollow portion 53 in a tight fit. In other embodiments, the sleeve 5 can be provided with a corresponding structure for the baffle 531 to be combined by extraction, locking, etc. It is only necessary to fix the baffle 531 to the hollow portion 53 in a removable manner to achieve the same purpose as mentioned above. However, the configuration is only an example and is not limited thereto.

In addition, if you want to make keys with different cross-sectional profiles share the same lower lock bead 131, you can also make the keys with different cross-sectional profiles use the same coding system to achieve this. For example, you can change the shape of the tooth 6 of the key 4 in Figure 13 to the tooth 6 of the first key 2 in Figure 12, so that the two keys can share the lower lock bead 131 shown in Figure 12.

In summary, the technical means disclosed in this invention can effectively solve the problems of knowledge and achieve the expected purpose and effect. It has not been seen in publications before the application, has not been publicly used, and has long-term progress. It is indeed an invention as defined in the Patent Law. Therefore, I have filed an application in accordance with the law and sincerely pray that the Supreme Court will give a detailed review and grant the invention patent. I will be very grateful.

However, the above are only several preferred embodiments of the present invention, and should not be used to limit the scope of implementation of the present invention. In other words, all equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the invention specification should still fall within the scope of the present invention patent.

1: Lock kernel

11: Keyhole

11a: First side

11b: Second side

111:First straight wall

112: First inclined wall

113: First side wall

114: The first support wall

115: First extension wall

121: Second straight wall

122: Second inclined wall

123: Second side wall

124: The second support wall

125: Second extension wall

5: Lining

54:Fixed components

Claims (16)

A lock core device based on matching multiple key cross-sectional shapes is applicable to a first key having a first cross-sectional profile and a second key having a second cross-sectional profile different from the first cross-sectional profile. The lock core device comprises: A lock core having a lock hole recessed in an axial direction; the lock hole is used to selectively receive the first key and the second key; The first key has a plurality of teeth, the second key has a plurality of teeth, and the positions of the teeth of the first key and the second key are offset in the axial direction; the lock core is provided with a plurality of lock ball grooves at intervals along the axial direction, each lock ball groove extends along the radial direction of the lock core, and the lock core device includes a plurality of lower lock balls respectively arranged in the lock ball grooves. When either the first key or the second key is inserted into the lock hole, each lower lock ball can be driven by the corresponding teeth. A lock core device based on matching multiple key cross-sectional shapes as described in claim 1, wherein the outer contour of the key hole is configured to be greater than or equal to the outer contour of the superimposed union of the first cross-sectional contour and the second cross-sectional contour. A lock core device based on matching multiple key cross-sectional shapes as described in claim 1, wherein the first cross-sectional profile and the second cross-sectional profile are respectively S-shaped, M-shaped, X-shaped, L-shaped, K-shaped, W-shaped or Y-shaped. A lock core device based on matching the cross-sectional shapes of multiple keys as described in claim 1, wherein the lock hole is provided with a first side end on one side and a second side end on the other side, and at least one of the first side end and the second side end is provided with a receiving portion for correspondingly receiving the first key or the second key. As described in claim 4, the lock core device is based on matching the cross-sectional shape of multiple lock keys, wherein the first side end has a first straight wall, the bottom end of the first straight wall is provided with a first inclined wall extending outwardly from the diameter of the lock hole, the lower end of the first inclined wall is provided with a first side wall, and the lower end of the first side wall is provided with a first supporting wall inclined inwardly from the diameter of the lock hole, and the lower end of the first supporting wall is provided with at least one first extension wall; and the second side end is provided with a second straight wall corresponding to the first straight wall, and the bottom end of the second straight wall is provided with a second inclined wall extending radially outwardly toward the lock hole, the lower end of the second inclined wall is provided with a second side wall, and the lower end of the second side wall is provided with a second supporting wall laterally toward the radial inward of the lock hole, and the lower end of the second supporting wall is provided with at least one second extension wall. As described in claim 4, the lock core device is based on matching the cross-sectional shapes of multiple keys, wherein the receiving portion is a recessed portion for correspondingly radially positioning the first key or the second key. A lock core device based on matching multiple lock key cross-sectional shapes as described in any one of claim 1 to claim 6, wherein the lock core is provided with a plurality of lock ball grooves spaced apart along its axial direction, each lock ball groove extends along the radial direction of the lock core, and the lock ball grooves are used to respectively correspond to and accommodate at least one of the lower lock balls. The lock core device based on matching multiple lock key cross-sectional shapes as described in claim 7 further includes a sleeve, which has an axially recessed accommodating groove, and the lock core is correspondingly sleeved in the accommodating groove; and the sleeve has a plurality of upper bead grooves corresponding to the lock ball grooves, and the sleeve is used to accommodate at least one upper lock bead respectively. As described in claim 8, a lock core device based on matching multiple key cross-sectional shapes is provided, wherein the bushing is provided with a hollow portion corresponding to the lock ball groove at one radial end thereof; and a baffle corresponding to the lock ball groove is provided at the hollow portion. As described in claim 9, the lock core device is based on matching multiple key cross-sectional shapes, wherein a fixing element is further provided on the outer edge of the liner, and the fixing element is used to correspond to and receive the block in the hollow portion. A lock core device based on matching the cross-sectional shapes of multiple keys as described in any one of claim 1 to claim 6, wherein the distance between the center point of the middle lock ball groove and the center of the tooth corresponding to the first key, and the distance between the center point of the middle lock ball groove and the center of the tooth corresponding to the second key are equal. A lock core device based on matching multiple lock key cross-sectional shapes as described in any one of claim 1 to claim 6, wherein the lock ball grooves are arranged at equal intervals along the axial direction. A key, comprising: A lock bar, the outer contour of which in cross section corresponds to the lock hole configured by the lock core of the lock core device structure based on matching multiple key cross-sectional shapes as described in any one of claims 1 to 12. A method for configuring a lock ball groove based on matching a lock hole with multiple key cross-sectional shapes is applicable to a first key having a first cross-sectional profile and a second key having a second cross-sectional profile different from the first cross-sectional profile, and the steps include: Configuring a lock core, and the lock core has a lock hole configured to be larger than and at least including a first cross-sectional profile and a second cross-sectional profile different from the first cross-sectional profile through an overlapped union of the outer contour; and the first key and the second key are respectively configured with a plurality of corresponding teeth on one side thereof, and the tooth positions of the first key and the second key have deviations in the axial direction; and A lock ball groove corresponding to the tooth is recessed at one radial end of the lock core, and the lock ball groove is correspondingly connected to the lock hole; At least one lower lock ball is respectively arranged in the lock ball groove, and when either the first lock key or the second lock key is inserted into the lock hole, each lower lock ball can be driven by the corresponding tooth. As described in claim 14, the method for configuring a bead lock groove based on a lock hole matching a multi-key cross-sectional shape further comprises: Selecting one of the bead lock grooves as a reference, and configuring the remaining bead lock grooves in an array corresponding to equal intervals, so that the projection position of the bead lock groove at least partially corresponds to the tooth portion. As described in claim 15, the method for configuring a bead lock groove based on a lock hole matching a multi-key cross-sectional shape, wherein the steps further include: Selecting the bead lock groove located in the middle as a reference, so that its projection position is located at the corresponding tooth portion; and configuring the remaining bead lock grooves in an array at equal intervals on both sides thereof.