GB2262769A - Antitheft type power door lock system. - Google Patents

Abstract

The door lock system comprises a door latch device 104, having a locking/unlocking lever 102, and an electric actuator including a worm wheel 3 driven by a reversible electric motor 1 to rotate in both directions from a neutral position. An operation lever 6 is linked to the (un)locking lever 102 to assume locking and unlocking positions when the lever 102 assumes lock and unlock positions respectively. The operation lever 6 has a projection 6b with which a projection 3a on the worm wheel 3 is engageable to pivot the lever 6 to the locking and unlocking positions upon rotation of the work wheel. An antitheft lever 9 has an engaging pin 9b slidably engaged with a cam groove 4 in the worm wheel 3. In response to the rotation of the worm wheel, the antitheft lever 9 is pivoted between a cancelling position wherein it is kept away from the travelling path of the operation lever 6, and a theft protection position, wherein at least a portion of the antitheft lever 9 is positioned on the travelling path of the operation lever 6. <IMAGE>

Description

ANTITHEFT TYPE POWER DOOR LOCK SYSTEM The present invention relates in general to power door lock systems for motor vehicles, and more particularly to power door lock systems of a type which is equipped with a theft protection mechanism.

In order to clarify the task of the present invention, one conventional power door lock system of the above-mentioned anti theft type will be outlined, which is disclosed in Japanese Patent First Provisional Publication No. 5565681.

In the conventional door lock system, by energizing a main electric motor installed in a casing, a rack connected a locking/unlocking lever of the door latch device is shifted in one or the other direction to achieve power locking or unlocking of the door. Furthermore, in the door lock system, by energizing an auxiliary electric motor by manipulating a key plate or the like from the outside of the vehicle, a lock pawl is brought into engagement with the rack to block movement of the rack in the unlocking direction,thereby to avoid unjust unlocking of the locked door latch device which would be made by a car thief or the like.

However, in the above-mentioned conventional power door lock system, usage of the two, that is, the main and auxiliary electric motors tends to cause a bulky, complicated, and high cost- construction of the door lock system.

It is therefore an object of the present invention to provide a power door lock system having a theft protection mechanism, which is compact, simple, and low-cost, According the present invention, there is provided a power door lock system having a theft protection mechanism, which uses only one electric motor for not only achieving the power locking/unlocking of the door latch device but also avoiding the unjust unlocking of the door latch device.

According to a first aspect of the present invention, there is provided a door lock system which comprises a door latch device having a locking/unlocking lever, the door latch device being locked and unlocked when the locking/unlocking lever assumes lock and unlock positions respectively; and an electric actuator including a reversible electric motor; a first member driven by the motor to move in both directions from a neutral position, the first member being formed with both a cam groove and a first projection; a movable second member linked to the locking/unlocking lever thereby to assume locking and unlocking positions when the locking/unlocking lever assumes the lock and unlock positions respectively, the second member being formed with a second projection with which the first projection is engageable to move the operation lever to the locking and unlocking positions upon movement-of the first member; and a movable third member having an engaging pin slidably engaged with the cam groove, the third member being movable, in response to the movement of the first member, between a canceling position wherein the third member is kept away from a traveling path of the second member thereby to permit the movement of the second member toward the unlocking position and a theft protection position wherein at least a portion of the third member is positioned on the traveling path of the second member thereby to block the movement of the second member toward the unlocking position.

According to a second aspect of the present invention, there is provided a door lock system which comprises a door latch device having a locking/unlocking lever, the door latch device being locked and unlocked when the locking/unlocking lever assumes lock and unlock positions respectively; a reversible electric motor; a rotating member driven by the motor to rotate in both directions from a neutral position, the rotating member being formed with a cam groove; a first projection formed on the rotating member; a pivotal operation lever linked to the locking/unlocking lever thereby to assume locking and unlocking positions when the locking/unlocking lever assumes the lock and unlock positions respectively; a second projection formed on the operation lever, the first projection being engageable with the second projection thereby to pivot the operation lever to the locking and unlocking positions upon rotation of the rotating member; a pivotal antitheft lever having an engaging pin slidably engaged with the cam groove, the antitheft lever being pivotal, in response to the rotation of the rotating member, between a canceling position wherein the antitheft lever is kept away from a traveling path of the operation lever thereby to permit the pivotal movement of the operation lever toward the unlocking position and a theft protection position wherein at least a portion of the antitheft lever is positioned on the traveling path of the operation lever thereby to block the pivotal movement of the operation lever toward the unlocking position.

Other objects and advantages of the present invention will become apparent from the following description when taken in conjunction with the accompanying drawings, in which: Fig. 1 is a view showing a theft protection mechanism employed in a power door lock system of a first embodiment of the present invention; Fig. 2 is a sectional view taken along the line A-A of Fig. 1; Fig. 3 is a schematic view of the theft protection mechanism, showing an unlocking condition of a door latch device; Fig. 4 is a view similar to Fig. 3, but showing a condition wherein the door latch device is under operation for taking a locking condition; Fg. 5 is a view similar to Fig. 3, but showing the locking condition of the door latch device;; Figs. 6 and 7 are views similar to Fig. 3, but showing conditions wherein the theft protection mechanism is under operation for taking the theft protection condition; Fig. 8 is a view similar to Fig. 3, but showing the theft protection condition of the theft protection mechanism; Fig. 9 is a view similar to Fig. 3, but showing a condition wherein the theft protection mechanism is under operation for canceling the theft protection condition; Fig. 10 is a schematic view of a theft protection mechanism employed in a power door lock mechanism of a second embodiment of the present invention; Fig. 11 is a view similar to Fig. 10, but showing a condition wherein the door latch device is under operation for taking an unlocking condition thereof;; Fig. 12 is a view similar to Fig. 10, but showing a possible undesired condition which may take place during the operation for taking the unlocking condition of the door latch device; and Fig. 13 is a sectional view taken along the line B-B of Fig. 12.

Referring to Figs. 1 to 9, particularly Fig. 1, there is shown a theft protection mechanism employed in a power door lock system of a first embodiment of the present invention.

In the drawings, denoted by numeral 1 is a reversible electric motor which is installed in a case 2. Within the case 2, there is arranged a speed reduction mechanism.

The speed reduction mechanism comprises a worm wheel 3 which is meshed with a worm la.

The worm la is securely disposed on an output shaft (no numeral) of the electric motor 1. As is seen from Fig. 2, the worm wheel 3 is rotatably disposed on a shaft 5 secured to the case 2.

As is understood from Figs. 1, 2, and 3, the worm wheel 3 is formed at its one side with an arcuate projection 3a and ä cam groove 4. As shown in Fig. 2, a return spring 2a including two springs parts is arranged between the case 2 and the worm wheel 3, so that the worm wheel 3 is biased to assume a neutral position as shown in Fig. 3.

As is seen from Fig. 3, the cam groove 4 is shaped liked a deformed letter "Y", which generally comprises an exit portion 4a which extends inward from a peripheral part of the worm wheel 3, an entrance portion 4b which extends inward from another peripheral part of the worm wheel 3, and an arcuate elongate portion 4c which has one end merged with inward ends of the exit and entrance portions 4a and 4b. The entrance portion 4b is positioned at the right of the exit portion 4a as viewed in Fig. 3. Between the exit and entrance portions 4a and 4b, there is defined an eyebrow-shaped guide projection 4d.

Denoted by numeral 6 is an operation lever which has a base end pivotally connected to the case 2 through a pivot shaft 7 which is secured to the operation lever 6. The operation lever 6 is formed at its free end back portion 6a with a longitudinally extending projection 6b which is engageable with the arcuate projection 3a of the worm wheel 3.

As will become apparent as the description proceeds, due to turning of the worm wheel 3 in normal (viz., clockwise in Fig. 1) or reversed (viz., counterclockwise) direction, the operation lever 6 can assume an unlocking position as shown in Fig. 3, or a locking position as shown in Fig. 5.

Denoted by numeral 50 is an output lever which is secured to the pivot shaft 7, so that the output lever 50 and the operation lever 6 pivot together with the pivot shaft 7 like a single unit.

The output lever 50 is connected through a connection rod 100 to a locking/unlocking lever 102 of a door latch device 104. A lock knob 106 mounted on an inside portion of the door and a key cylinder 108 mounted on an outside portion of the door are connected to the locking/unlocking lever 102 as schematically shown in Fig. 1.

When the operation lever 6 assumes the locking position (see Fig. 5), the locking/unlocking lever 102 assumes a lock position wherein a latching condition of the door latch device 104 is locked, and when the operation lever 6 is pivoted to the unlocking position (see Fig. 3), the locking/unlocking lever 102 is pivoted to an unlock position wherein the locked condition of the door latch device 104 is canceled.

It is to be noted that the latching condition of the door latch device 104 means that the door latch device 104 establishes a latched engagement of a fully closed door relative to the vehicle body, and the locked condition of the door latch device 104 means that the latching condition of the door latch device 104 is locked. Thus, when the door latch device 104 is kept in the latching condition, the door can be opened by only manipulating an outside or inside door handle, while, when the door latching device 104 is kept in the locked condition, the door can-not be opened even when the outside or inside door handle is manipulated. The door latch device of this type is disclosed in US Patent No. 4,850,625 granted to Yasuaki HORI et al on July 25, 1989.

Referring back to Fig. 1, a part of a known switching means 8 is arranged on the operation lever 6, which means controls the electric motor 1 in response to the movement of the operation lever 6 toward or from the locking position or unlocking position. Due to the function of the return spring 2a, the worm wheel 3 is automatically returned to its neutral position (as shown in Fig. 3) after the movement of the operation lever 6 to the locking or unlocking position. That is, when, due to operation of the motor 1, the worm wheel 3 is turned in normal (viz., clockwise in Fig. 1) or reversed (viz., counterclockwise) direction, the arcuate projection 3a of the worm wheel 3 is brought into abutment with the elongate projection 6b thereby to pivot the operation lever 6 to the unlocking position as shown in Fig. 3, or the locking position as shown in Fig. 5.

Thereafter, due to the function of the return spring 2a, the worm wheel 3 is returned to the neutral position. Thus, usually, the worm wheel 3 assumes the neutral position.

Denoted by numeral 9 is an antitheft lever whose base end 9a is pivotally connected to the case 2 through a shaft 10.

As is seen from Fig. 3, the antitheft lever 9 is biased in a counterclockwise direction by a turned spring 11 disposed about the shaft 10. A free end portion 9c of the antitheft lever 9 is provided with an engaging pin 9b which is slidably received in the cam groove 4 of the worm wheel 3. The antitheft lever 9 can assume both a canceling position wherein as is shown in Fig. 3 the engaging pin 9b engages an outer peripheral wall of the eyebrow-shaped guide projection 4d, and a theft protection position wherein as is shown in Fig. 8, the engaging pin 9b enters the exit portion 4a.

When the anti theft lever 9 is in the theft protection position (see Fig. 8), the free end portion 9c of the lever 9 is placed on the traveling path of the elongate projection 6b of the operation lever 6. Thus, under this condition, the operation lever 6 is suppressed from moving in the direction from the locking position to the unlocking position. While, when the anti theft lever 9 is in the canceling position (Fig. 3), the free end portion 9c of the lever 9 is kept away from the traveling path of the elongate projection 6b. Thus, under this condition, the operation lever 6 is permitted to move freely between the locking and unlocking positions.

While, when the operation lever 6 is within an area between the unlocking position and a position just before the locking position, a side edge 9d of the anti theft lever 9 is in engagement with the leading end of the elongate projection 6b. Thus, under this condition, the antitheft lever 9 is suppressed from pivoting in a counterclockwise direction, that is, the lever 9 is remained in the canceling position.

In the following, operation of the abovementioned first embodiment will be described with reference to the drawings.

For ease of understanding of the operation, the description will be commenced with respect to an unlocked condition of the door latch device 104 and the operation lever 6 assumes the unlocking position, as shown in Fig. 3. Under this condition, the engaging pin 9b of the antitheft lever 9 is in abutment with the eyebrow-shaped guide projection 4d keeping the antitheft lever 9 at the canceling position, and the worm wheel 3 assumes the neutral position having the arcuate projection 3a positioned away from the traveling path of the elongate projection 6b.

MANUAL OPERATION When now the lock knob 106 (or key cylinder 108) is manipulated for the purpose of locking the door latch device 104, the locking/unlocking lever 102 of the door latch device 104 is shifted to the locking position thereby to pivot through the output lever 50 the operation lever 6 to the locking position as shown in Fig. 5.

Of course, the operation lever 6 in this locking position can be pivoted back to the unlocking position (as shown in Fig. 3) by manipulating the lock knob 106 (or key cylinder 108) in a reversed fashion. It is to be noted that the forward and backward pivoting movements of this operation lever 6 are carried out without being affected by the electric motor 1.

POWER OPERATION When, with the door lock system assuming the condition of Fig. 3, a control switch (not shown) is manipulated for the purpose of locking the door latching device 104, the motor 1 is energized to turn the worm wheel 3 in a counterclockwise direction from the neutral position. When the worm wheel 3 is further rotated, the arcuate projection 3a of the worm wheel 3 is brought into abutment with the elongate projection 6b of the operation lever 6 thereby to pivot the lever 6 from the unlocking position to the locking position as is seen from Fig. 4. When, due to function of the switching means 8 thereafter, energization of the electric motor 1 ceases, the worm wheel 3 is returned back to the neutral position as shown in Fig. 5 by the force of the return spring 2a. With this, the locking condition is established in the door lock system as shown in Fig. 5.

When now the control switch (not shown) is manipulated for the purpose of canceling the locking condition shown in Fig. 5, the electric motor 1 is energized to turn the worm wheel 3 in a clockwise direction from the neutral position.

With this, the arcuate projection 3a of the worm wheel 3 is brought into engagement with the elongate projection 6b thereby to pivot the operation lever 6 from the locking position to the unlocking position as is seen from Fig. 9.

When, due to function of the switching means 8 thereafter, the energization of the motor 1 ceases, the worm wheel 3 is returned back to the neutral position by the force of the return spring 2a. With this, the unlocking condition is established in the door lock system as shown in Fig. 3.

ANTITHEFT OPERATION When, with the door lock system assuming the locking condition of Fig. 5, a so-called antitheft manipulation is carried out by using a key plate or other known means from outside of the vehicle, the electric motor 1 is energized to turn the worm wheel 3 in a counterclockwise direction bringing the engaging pin 9b of the anti theft lever 9 into the arcuate elongate portion 4c of the cam groove 4 through the entrance portion 4b. With this, the antitheft lever 9 is pivoted to an antitheft position as shown in Fig. 7. When, due to function of the switching means 8 thereafter, the energization of the motor 1 ceases, the worm wheel 3 is returned back to the neutral position by the force of the return spring 2a.Due to this return back movement of the worm wheel 3, the engaging pin 9b is moved from the arcuate elongate portion 4c to the exit portion 4a thereby to leave the antitheft lever 9 in the antitheft position as shown in Fig. 8. Under this condition, the free end portion 9c of the anti theft lever 9 is positioned on the traveling path of the elongate projection 6b of the operation lever 6. Thus, the antitheft condition is established in the locked door latch device 104. That is, even when an external force is applied to the output lever 50, the operation lever 6 can not be pivoted to the unlocking position. Thus, even when the output lever 50 or the locking-unlocking lever 102 is unjustly pushed toward the unlocking position by a car theft handling a pick or the like, the operation lever 6 can not be pivoted to the unlocking position.

ANTITHEFT CONDITION CANCELING OPERATION When, with the door lock system assuming the antitheft condition as shown in Fig. 8, a so-called antitheft condition canceling manipulation is carried out by using the key plate or other known means from outside of the vehicle, the electric motor 1 is energized to turn the worm wheel 3 in a clockwise direction from the neutral position causing the engaging pin 9b of the antitheft lever 9 to slide in the cam groove 4 from the exit portion 4a to the peripheral part of the worm wheel 3.With this, the antitheft lever 9 is brought to the canceling position displacing the free end portion 9c thereof away from the traveling path of the elongate projection 6b of the operation lever 6, and then the arcuate projection 3a of the worm wheel 3 is brought into abutment with the elongate projection 6b thereby pivoting the operation lever 6 from the locking position to the unlocking position, as will be seen from Fig. 9. Thereafter, due to function of the return spring 2a, the worm wheel 3 is returned to the neutral position. Upon this, the door lock system shows the condition of Fig. 3.

Under this condition, the door can be opened by only manipulating the outside or inside door handle.

Referring to Figs. 10 to 13, there is shown a theft protection mechanism employed in a powered door lock system of a second embodiment of the present invention.

For ease of description, parts and constructions similar to those of the abovementioned first embodiment are denoted by the same numerals and detailed explanation of them will be omitted from the following description.

In this second embodiment, a resilient tongue portion 4e is provided at the exit portion 4a of the cam groove 4 of the worm wheel 3. The tongue portion 4e is so shaped as to block insertion of the engaging pin 9b of the antitheft lever 9 into the exit portion 4a from the peripheral part of the worm wheel 3 while permitting escaping of the engaging pin 9b from the exit portion 4a to the peripheral part.

Provision of such tongue portion 4e brings about an advantageous action of the door lock system in a case wherein the electric unlocking operation is carried out in the door lock system with the locking knob 106 kept pressed by a passenger's arm or the like. In fact, when the locking knob 106 has been kept pressed by the passenger's arm, the raising or lock canceling movement of the locking knob 106 caused by the electric unlocking operation can not be smoothly carried out, which tends to induce a misoperation of the door lock system if the tongue portion 4e is not provided.

That is, as is seen from Fig. 13, at the exit portion 4a of the cam groove 4, there is provided the tongue portion 4e which extends obliquely from the bottom of the exit portion 4a. The tongue portion 4e has a leading end directed toward the peripheral part of the worm wheel 3. As will be seen from this drawing, when the engaging pin 9b of the antitheft lever 9 is moved toward the exit portion 4a, that is, rightward in the drawing, the raised leading end of the tongue portion 4e blocks such movement, while, when the engaging pin 9b is moved from the exit portion 4a toward the peripheral part of the worm wheel 3, that is, leftward in the drawing, the tongue portion 4e is resiliently depressed downward to permit such escaping movement of the engaging pin 9b.

In the following, operation of the second embodiment will be described with reference to the drawings.

ANTITHEFT CONDITION CANCELING OPERATION The antitheft condition of the door lock system of this second embodiment will be understood from Fig. 8.

When, now, unlocking manipulation is carried out by using the key plate or other known means from outside of the vehicle, the electric motor 1 is energized to turn the worm wheel 3 from the neutral position causing the engaging pin 9b of the antitheft lever 9 to slide in the cam groove 4 from the exit portion 4a to the peripheral part of the worm wheel 3 getting over the tongue portion 4e. During this, the tongue portion 4e is resiliently deformed to permit the escaping movement of the engaging pin 9b.With this, the antitheft lever 9 is brought to the canceling position displacing the free end portion 9c thereof away from the traveling path of the elongate projection 6b of the operation lever 6 as is seen from fig. 10, and then the arcuate projection 3a of the worm wheel 3 is brought into abutment with the elongate projection 6b thereby pivoting the operation lever 6 from the locking position to the unlocking position, as will be seen from Fig. 11. Thereafter, due to function of the return spring 2a, the worm wheel 3 is returned to the neutral position. Under this condition, the door can be opened by only manipulating the outside or inside door handle.

LOCK CANCELING OPERATION.BY POWER When, with the door lock system assuming the condition of Fig. 10, the control switch (not shown) is manipulated for the purpose of unlocking the locked door latch device 104, the motor 1 is energized to turn the worm wheel 3 in a clockwise direction from the neutral position.

When the worm wheel 3 is further rotated, the arcuate projection 3a of the worm wheel 3 is brought into abutment with the elongate projection 6b of the operation lever 6 thereby to pivot the lever 6 from the locking position to the unlocking position, as is seen from rig. 11.

With this, the locking knob 106 is raised up to assume its unlocking position. However, if the locking knob 106 is instantly pushed down to its locking position by for example a passenger's arm which has been put on the knob 106, it tends to occur that the operation lever 6 is pivoted back to the locking position before the worm wheel 3 is returned to the neutral position. This phenomenon may brings about insertion of the engaging pin 9b into the exit portion 4a by the force of the spring 11 if the tongue portion 4e is not present. That is, the antitheft condition may be established unwillingly.

However, in this second embodiment, due to provision of the tongue portion 4e, the undesired insertion of the engaging pin 9b into the exit portion 4a does not occur. That is, during the turning of the worm wheel 3 to its neutral position, the engaging pin 9b is assuredly brought to the eyebrow-shaped guide projection 4d without entering the exit portion 4a, and thus the antitheft lever 9 is held at the canceling position. .Thus, the abovementioned mis-operation never occurs.

As will be understood from the foregoing description, the powered door lock system according to the present invention uses only one electric motor for achieving both the powered locking/unlocking of the door and the theft projection of the door lock. Thus, the door lock system of the invention can be compact, simple, and low-cost.

Claims (13)

1. A door lock system comprising: a door latch device having a locking/unlocking lever, said door latch device being locked and unlocked when said locking/unlocking lever assumes lock and unlock positions respectively; and an electric actuator including a reversible electric motor; a first member driven by said motor to move in both directions from a neutral position, said first member being formed with both a cam groove and a first projection; a movable second member linked to said locking/unlocking lever thereby to assume locking and unlocking positions when said locking/unlocking lever assumes said lock and unlock positions respectively, said second member being formed with a second projection with which said first projection is engageable to move said operation lever to said locking and unlocking positions upon movement of said first member; and a movable third member having an engaging pin slidably engaged with said cam groove, said third member being movable, in response to the movement of said first member, between a canceling position wherein said third member is kept away from a traveling path of said second member, thereby to permit the movement of said second member toward said unlocking position, and a theft protection position wherein at least a portion of said third member is positioned on the traveling path of said second member, thereby to block the movement of said second member toward said unlocking position.

2. A door lock system comprising: a door latch device having a locking/unlocking lever, said door latch device being locked and unlocked when said locking/unlocking lever assumes lock and unlock positions respectively; a reversible electric motor; a rotating member driven by said motor to rotate in both directions from a neutral position, said rotating member being formed with a cam groove; a first projection formed on said rotating member; a pivotal operation lever linked to said locking/unlocking lever, thereby to assume locking and unlocking positions when said locking/unlocking lever assumes said lock and unlock positions respectively; a second projection formed on said operation lever, said first projection being engageable with said second projection, thereby to pivot said operation lever to said locking and unlocking positions upon rotation of said rotating member;; a pivotal antitheft lever having an engaging pin slidably engaged with said cam groove, said antitheft lever being pivotal, in response to the rotation of said rotating member, between a cancelling position wherein said antitheft lever is kept away from a traveling path of said operation lever, thereby to permit the pivotal movement of said operation lever toward said unlocking position, and a theft protection position wherein at least a portion of said antitheft lever is positioned on the traveling path of said operation lever, thereby to block the pivotal movement of said operation lever toward said unlocking position.

3. A door lock system as claimed in Claim 2, in which said cam groove of said rotating member extends circularly around the center of said rotating member and comprises: an entrance portion which extends inward from another peripheral part of said rotating member; an exit portion which extends inward from a peripheral part of said rotating member; and an arcuate elongate portion which has one end merged with inward ends of said exit and entrance portions.

4. A door lock system as claimed in Claim 3, in which said cam groove is shaped like a deformed letter "Y".

5. A door lock system as claimed in Claim 3or 4, in which said entrance portion is so shaped as to receive said engaging pin thereinto, thereby to pivot said antitheft lever to said theft protection position upon rotation of said rotating member in one direction from said neutral position, and in which said exit portion is so shaped as to put out said engaging pin therefrom, thereby to pivot said antitheft lever to said canceling position upon rotation of said rotating member toward said neutral position.

6. A door lock systems claimed in Claim 5, in which said exit portion of said cam groove has one-way means which blocks insertion of said engaging pin into said exit portion from the peripheral part of said rotating member while permitting escaping movement of said engaging pin from said exit portion to the peripheral part.

7. A door lock system as claimed in Claim 6, in which said one-way means comprises a resilient tongue portion which is provided at said exit portion1 said tongue portion extending obliquely from the bottom of said exit portion and having a raised leading end directed toward the peripheral part of said rotating member.

8. A door-lock system as cfgimed-in anyof claims 2to 7~, in which said rotating member is a worm wheel which is meshed with a worm disposed about an output shaft of said electric motor.

9. A door lock system as claimed in Claim 8, in which said worm wheel is biased toward said neutral position by spring means.

10. A door lock system as claimed in Claim 3, in which an eyebrow-shaped guide projection is defined between said exit and entrance portions of the cam groove.

11. A door lock system as claimed in any of claims 2 to 10, in which said second projection extends longitudinally on said operation lever.

12. A door lock system as.claimed in any of claims 2 to 11, in which said antitheft lever is biased toward said rotating member by spring means.

13. A door lock system substantially as described with reference to, and as shown in, Figures 1 to 9 or Figures 10 to 13 of the accompanying drawings.