CN220307589U

CN220307589U - Signal converter convenient to installation

Info

Publication number: CN220307589U
Application number: CN202321975242.3U
Authority: CN
Inventors: 李莹; 牛新蕊; 王立鑫
Original assignee: Jilin Province Kangu Fumei Technology Co ltd
Current assignee: Jilin Province Kangu Fumei Technology Co ltd
Priority date: 2023-07-26
Filing date: 2023-07-26
Publication date: 2024-01-05
Anticipated expiration: 2033-07-26

Abstract

The utility model discloses a signal converter convenient to install, which comprises a converter main body, wherein mounting plates are arranged at two ends of the converter main body, a connecting shell is arranged at one side of the converter main body, a plurality of groups of circuit connecting holes are formed in one side of the connecting shell, circuit protection fixing components with the same group number as the connecting holes are arranged on the upper surface of the connecting shell, and circuit clamping plates are movably connected to two ends inside the circuit connecting holes through the circuit protection fixing components.

Description

Signal converter convenient to installation

Technical Field

The utility model belongs to the technical field of signal converters, and particularly relates to a signal converter convenient to install.

Background

The signal converter is a device, converts an electric signal into a digital signal through a digital-to-electric principle, needs professional chip processing, is rapid in technological development at present, is widely applied to electronic signals, is more and more constant, and people want to control the conversion and transportation of the signals more so that the signals can be utilized more. Publication No.: CN108847837a discloses a signal converter comprising: a first socket set configured to receive a device under test signal; a relay group including a plurality of relays; a function selection switch configured to enable a corresponding relay in the relay group by selecting a preset switch position; and a second socket set configured to transmit respective device under test signals to a standard instrument via the enabled respective relays to measure respective parameters under test of the device under test. The signal converter provided by the utility model can not only realize the conversion from the tested equipment signal to the standard instrument signal, but also conveniently perform measurement switching among various parameters to be tested of the tested equipment, and can not cause instrument damage due to wiring errors.

The problems with the above techniques are: the signal converter is installed in the cabinet and used, screws at four corners are generally required to be rotated to be installed and fixed in the cabinet, the screws at four corners are not only required to be rotated by special tools, the screws do not need to be gradually rotated at four positions in the process of mounting and dismounting, time and labor are wasted when the screws are installed, the mounting and dismounting can not be conveniently and rapidly carried out, meanwhile, one end of a circuit is connected to one side of the signal converter, the circuit connecting end can be compacted and fixed by adopting a rotating bolt for fixing the circuit, and the corresponding tools are required to be rotated by a transmission rotating bolt, so that the screws cannot be rotated conveniently and rapidly when looseness occurs, and the signal converter convenient to install is provided.

Disclosure of Invention

The utility model provides a signal converter convenient to install, which is characterized in that screws at four corners can be conveniently and rapidly installed and disassembled without tools, so that convenience and working efficiency in installation are improved, meanwhile, the connecting ends of the lines can be conveniently and rapidly fixed without tools, bending damage of the connecting ends can be effectively avoided, the service life and normal use of the connecting lines are prolonged, the problems that when the signal converter is installed in a cabinet for use, the screws at four corners are generally required to be rotated to be installed and fixed in the cabinet, the screws at four corners are not required to be rotated by special tools, in the process of mounting and dismounting, the four positions are not required to be gradually rotated, time and labor are wasted in the process of installation, the connecting ends of the lines at one side of the signal converter cannot be conveniently and rapidly installed and disassembled, the connecting ends of the lines can be compacted and fixed by adopting rotating bolts for fixing the connecting ends of the lines, and the corresponding tools are required to be rotated in the process of loosening.

The signal converter convenient to install comprises a converter main body, mounting plates are arranged at two ends of the converter main body, protective shells are arranged on the upper surfaces of two groups of mounting plates, quick assembly and disassembly components are arranged in the protective shells, threaded holes are formed in two ends of the upper surfaces of the two groups of mounting plates, the threaded holes are internally connected with threaded rods through the quick assembly and disassembly components, the threaded rods are movably connected with the threaded holes through the quick assembly and disassembly components, a connecting shell is arranged on one side of the converter main body, a plurality of groups of circuit connecting holes are formed in one side of the connecting shell, circuit protection fixing components with the same number as that of the connecting holes are arranged on the upper surface of the connecting shell, and circuit clamping plates are movably connected at two ends of the inside of the circuit connecting holes through the circuit protection fixing components.

As the preferable mode of the utility model, the quick assembly and disassembly assembly comprises two groups of synchronous wheels, a synchronous belt is sleeved between the two groups of synchronous wheels, the two groups of synchronous wheels are fixedly connected with the upper ends of the two groups of screw rods respectively, and the two groups of synchronous wheels are movably connected inside the protective shell.

As the preferable mode of the utility model, the bottom of the protective shell is provided with the movable groove, the middle part of the upper surface of one group of synchronous wheels is fixedly provided with the driving rotating rod, the driving rotating rod penetrates through one end of the upper surface of the protective shell, and one end of the upper surface of the protective shell is provided with the rotating hole.

As the preferable mode of the utility model, the edge parts of the upper surfaces of the two groups of synchronous wheels are respectively provided with a sliding groove, the interiors of the two groups of sliding grooves are respectively and movably connected with a sliding circular plate, the upper surfaces of the sliding circular plates are fixedly provided with a guide plate, and one end of the guide plate is in sliding connection with one side of the interior of the movable groove.

As the preferable mode of the utility model, the circuit protection fixing component comprises a bidirectional screw rod, two ends of the side wall of the bidirectional screw rod are connected with driving plates through threads, a lifting groove opposite to the driving plates is formed in one side of the inside of the circuit connecting hole, the bidirectional screw rod is rotatably arranged in the lifting groove, and two groups of circuit clamping plates are rotatably arranged at one ends of the opposite sides of the two groups of driving plates respectively.

As the preferable mode of the utility model, the upper end of the bidirectional screw rod is fixedly provided with a driving rod, the driving rod penetrates through the upper surface of the connecting shell to the lifting groove, a plurality of groups of penetrating holes opposite to the driving rod are formed in the upper surface of the connecting shell, and the upper surface of the driving rod is elastically connected with a rotating plate.

As the preferable mode of the utility model, the square rod is fixedly arranged at the bottom of the rotating plate, the spring is fixedly arranged at the lower end of the square rod, the square groove is formed in the upper end of the driving rod, one end of the square rod is slidably arranged in the square groove, one end of the spring is fixedly connected with the lower end of the square groove, a plurality of groups of equidistant clamping blocks are arranged at the edge of the bottom of the rotating plate, the upper surface of the connecting shell is provided with a clamping groove opposite to the clamping blocks, and the clamping blocks are clamped with the clamping grooves.

1. According to the utility model, through the design that the two groups of synchronous wheels are fixedly connected with the upper ends of the two groups of screw rods respectively, when the driving rotating rods are rotated, the two groups of screw rods can be controlled to rotate simultaneously, the two screw rods can be rotated without tools, the driving rotating rods on the two sides can be rotated to rapidly mount and dismount the converter main body during mounting, so that the effect of improving the convenience and the working efficiency during mounting is effectively achieved, the two groups of circuit clamping plates are respectively and rotatably connected with one ends of the two groups of driving plates at the opposite sides, when a connecting circuit passes through a circuit connecting hole and is connected with the converter main body, the rotating plates can be pulled upwards and rotated through square rods, the driving rods can be used for controlling the bidirectional screw rods to rotate, the two groups of driving plates can be controlled to mutually approach and clamp the connected circuit, the rotating plates can be directly released after clamping is finished, the rotating plates can be automatically matched with the connecting shell through the clamping blocks and the clamping grooves under the tensile force of the springs, when the circuit is rocked, the connecting circuit can be rotated through the connecting wire and the connecting plate can be rotated to be prevented from being bent by bending the connecting circuit, the connecting circuit is prevented from being damaged, and the service life is prolonged.

2. According to the utility model, through the design that the two groups of synchronous wheels are movably connected in the protective shell, when the synchronous wheels and the synchronous belt rotate and move along with the screw rod in a lifting manner, the movable groove in the protective shell can move, and the protective shell can effectively protect the two groups of synchronous wheels and the synchronous belt from external influences, so that the effect of effectively ensuring that the two groups of screw rods rotate and are installed simultaneously is achieved.

3. According to the utility model, through the design that the middle part of the upper surface of one group of synchronous wheels is fixedly provided with the driving rotating rod, when the driving rotating rod drives one group of synchronous wheels to rotate, the other group of synchronous wheels can be controlled to rotate by the synchronous belt, so that the effect that the driving rotating rod can simultaneously control two groups of synchronous wheels to rotate two groups of screws is achieved.

4. According to the utility model, through the design that one end of the guide plate is in sliding connection with one side of the inside of the movable groove, when the screw rod drives the synchronous wheel to move up and down, the guide plate can guide and lift the synchronous wheel through the sliding circular plate, so that the synchronous wheel can move up and down in a directional and linear manner, and the effect of effectively enabling the synchronous wheel to stably drive the screw rod to rotate and lift is achieved.

5. According to the utility model, through the design that the two ends of the side wall of the bidirectional screw rod are connected with the driving plates through the threads, when the bidirectional screw rod rotates, the two groups of driving plates can be controlled to be close to or far away from each other through the threads, and the two groups of driving plates can clamp the connecting wire penetrating through the inside of the line connecting hole in a centered manner, so that the effect of clamping and fixing the connecting wire when the bidirectional screw rod rotates is achieved.

6. According to the utility model, the driving rod is fixedly arranged at the upper end of the bidirectional screw rod, so that the bidirectional screw rod can be controlled to rotate when the driving rod rotates, and the rotating plate can drive the driving rod to rotate through the square rod and the square groove, so that the effect of controlling the bidirectional screw rod to rotate when the rotating plate rotates is achieved.

7. According to the utility model, through the design that one end of the square rod is slidably arranged in the square groove, when the connecting wire is fixed, the rotating plate can be loosened, the rotating plate can automatically drive the clamping block to be close to the inside of the clamping groove under the pulling action force of the spring, then the clamping block can be clamped into the inside of the clamping groove, and the rotating plate can not rotate, so that the effect of fixing the connecting wire in the circuit connecting hole without using a tool is achieved.

Drawings

FIG. 1 is a schematic perspective view of the overall structure provided by an embodiment of the present utility model;

fig. 2 is a schematic perspective view of a protective shell structure according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic perspective view of the structure at A of FIG. 2 provided by an embodiment of the present utility model;

fig. 4 is a schematic perspective view of a circuit protection fixing assembly according to an embodiment of the present utility model.

In the figure: 1. a transducer body; 2. a protective shell; 3. a connection housing; 4. a mounting plate; 5. a screw; 6. sliding the circular plate; 7. a guide plate; 8. a line clamping plate; 9. a clamping groove; 10. the assembly is quickly installed and disassembled; 11. a line protection fixture assembly; 12. a clamping block; 13. a spring; 14. square bar; 101. driving the rotating rod; 102. a synchronizing wheel; 103. a synchronous belt; 1101. a rotating plate; 1102. a driving rod; 1103. a two-way screw rod; 1104. and a driving plate.

Detailed Description

For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings.

The structure of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, the signal converter convenient to install provided by the embodiment of the utility model comprises a converter main body 1, wherein mounting plates 4 are arranged at two ends of the converter main body 1, protective shells 2 are arranged on the upper surfaces of two groups of mounting plates 4, quick-release assemblies 10 are arranged in the protective shells 2, threaded holes are formed in two ends of the upper surfaces of two groups of mounting plates 4, screw rods 5 are connected with the inner parts of the multiple groups of threaded holes through threads, the screw rods 5 are movably connected with the threaded holes through the quick-release assemblies 10, a connecting shell 3 is arranged on one side of the converter main body 1, multiple groups of circuit connecting holes are formed in one side of the connecting shell 3, circuit protection fixing assemblies 11 with the same group number as the connecting holes are arranged on the upper surface of the connecting shell 3, and circuit clamping plates 8 are movably connected with the two ends in the circuit connecting holes through the circuit protection fixing assemblies 11.

The scheme is adopted: through the design of two sets of synchronizing wheels 102 with two sets of screw rods 5 upper end fixed connection respectively, when rotating drive bull stick 101, can control two sets of screw rods 5 simultaneously and rotate two screw rods 5, and can not rotate two sets of drive bull sticks 101 with the help of the instrument, and just can install and dismantle converter main part 1 fast just can be rotated to the drive bull stick 101 on both sides when the installation, thereby the effectual convenience and the effect of work efficiency when having improved the installation have been reached, two sets of circuit splint 8 rotate the design of being connected with two sets of drive plate 1104 opposite side's one end respectively, the connecting wire just can upwards drag and rotate the rotating plate 1101 when passing circuit connecting hole and converter main part 1 and be connected, rotating plate 1101 just can make actuating lever 1102 control bi-directional lead screw 1103 rotate through square pole 14, bi-directional lead screw 1103 just can control two sets of drive plate 1104 and be close to each other and can carry out the centre gripping to the circuit of connection, just can directly loosen the rotating plate 1101 just can be automatic through joint block 12 and joint 9 with the draw-in under the pulling force of spring 13 and the connecting wire 3 and can take place through bending and the connecting wire 3 and can also avoid the fact the effect that the connecting wire is damaged and can be broken and can only rotate the fixed with the fixed line has been reached when the bending and the fixed connection has improved the life.

Referring to fig. 2 and 3, the quick assembly-disassembly component 10 includes two sets of synchronizing wheels 102, a synchronous belt 103 is sleeved between the two sets of synchronizing wheels 102, the two sets of synchronizing wheels 102 are fixedly connected with the upper ends of the two sets of screws 5 respectively, and the two sets of synchronizing wheels 102 are movably connected inside the protective shell 2.

The scheme is adopted: through the equal swing joint of two sets of synchronizing wheels 102 in the inside design of protective housing 2, when synchronizing wheel 102 and hold-in range 103 rotate and follow screw rod 5 elevating movement, can protect the inside activity inslot activity of shell 2, and protective housing 2 just can effectually protect two sets of synchronizing wheels 102 and hold-in range 103 not receive external influence to the effect that can rotate the installation simultaneously of two sets of screw rods 5 has been reached.

Referring to fig. 2 and 3, a movable groove is formed in the bottom of the protective housing 2, a driving rotating rod 101 is fixedly mounted in the middle of the upper surface of a group of synchronous wheels 102, the driving rotating rod 101 penetrates through one end of the upper surface of the protective housing 2, and a rotating hole is formed in one end of the upper surface of the protective housing 2.

The scheme is adopted: through the design that the middle part of the upper surface of a group of synchronizing wheels 102 is fixedly provided with a driving rotating rod 101, when the driving rotating rod 101 drives one group of synchronizing wheels 102 to rotate, the other group of synchronizing wheels 102 can be controlled to rotate through a synchronous belt 103, so that the effect that the driving rotating rod 101 can simultaneously control two groups of synchronizing wheels 102 to enable two groups of screw rods 5 to rotate is achieved.

Referring to fig. 2 and 3, sliding grooves are formed in the edge portions of the upper surfaces of the two groups of synchronous wheels 102, sliding circular plates 6 are movably connected inside the two groups of sliding grooves, guide plates 7 are fixedly mounted on the upper surfaces of the sliding circular plates 6, and one ends of the guide plates 7 are in sliding connection with one side of the inner portion of each movable groove.

The scheme is adopted: through the design of deflector 7 one end and the inside one side sliding connection of movable groove, when screw rod 5 drove synchronizing wheel 102 elevating movement, deflector 7 just can be through the direction lift of slip plectane 6 to synchronizing wheel 102 for synchronizing wheel 102 can directional straight line elevating movement, thereby reached the effect that can effectually make synchronizing wheel 102 stable drive screw rod 5 rotate the lift.

Referring to fig. 4, the line protection fixing assembly 11 includes a bidirectional screw 1103, two ends of a side wall of the bidirectional screw 1103 are both connected with a driving plate 1104 through threads, a lifting groove opposite to the driving plate 1104 is formed on one side of an inside of a line connection hole, the bidirectional screw 1103 is rotatably mounted in the lifting groove, and two sets of line clamping plates 8 are rotatably mounted at one ends of opposite sides of the two sets of driving plates 1104 respectively.

The scheme is adopted: through the design that two ends of two-way lead screw 1103 lateral wall all have drive plate 1104 through threaded connection, can control two sets of drive plates 1104 and be close to each other or keep away from through the screw thread when two-way lead screw 1103 rotates, two sets of drive plates 1104 just can centre gripping in the middle the connecting wire that the inside passed of line connecting hole to just can carry out the fixed effect of centre gripping to the connecting wire when having reached two-way lead screw 1103 pivoted.

Referring to fig. 4, a driving rod 1102 is fixedly mounted at the upper end of the bidirectional screw 1103, the driving rod 1102 penetrates through the upper surface of the connection housing 3 to the lifting groove, a plurality of groups of penetrating holes opposite to the driving rod 1102 are formed in the upper surface of the connection housing 3, and a rotating plate 1101 is elastically connected to the upper surface of the driving rod 1102.

The scheme is adopted: through the design that two-way lead screw 1103 upper end fixed mounting has actuating lever 1102, can control two-way lead screw 1103 rotation when actuating lever 1102 rotates, and the revolving plate 1101 can drive actuating lever 1102 rotation through square pole 14 and square groove to can control two-way lead screw 1103 pivoted effect when having reached revolving plate 1101 and rotating.

Referring to fig. 4, a square rod 14 is fixedly installed at the bottom of a rotating plate 1101, a spring 13 is fixedly installed at the lower end of the square rod 14, a square groove is formed in the upper end of a driving rod 1102, one end of the square rod 14 is slidably installed inside the square groove, one end of the spring 13 is fixedly connected with the lower end of the square groove, a plurality of groups of equidistant clamping blocks 12 are arranged at the bottom edge of the rotating plate 1101, a clamping groove 9 opposite to the clamping blocks 12 is formed in the upper surface of a connecting shell 3, and the clamping blocks 12 are clamped with the clamping grooves 9.

The scheme is adopted: through square pole 14 one end slidable mounting in the design of square inslot, when fixed to the connecting wire, just can loosen the revolving plate 1101, the revolving plate 1101 just can be close to inside the joint groove 9 through automatic drive joint piece 12 under the pulling effort of spring 13, and then inside joint groove 9 just can block to joint piece 12, revolving plate 1101 just can not rotate to the effect that can not fix the connecting wire of inside the circuit connecting hole with the help of the instrument has been reached.

When the device is used, the driving rotating rod 101 is rotated, the driving rotating rod 101 can drive one group of synchronous wheels 102 to rotate, the other group of synchronous wheels 102 can be controlled to rotate through the synchronous belt 103, the driving rotating rod 101 can simultaneously control the two groups of synchronous wheels 102 to enable the two groups of screw rods 5 to rotate, the two screw rods 5 can be rotated without tools, the driving rotating rod 101 on two sides can rotate during installation, the converter main body 1 can be quickly installed and detached, then connecting wires can be inserted, the rotating plate 1101 can be pulled upwards and rotated, the driving rod 1102 can be enabled to control the bidirectional screw rod 1103 to rotate through the square rod 14, the bidirectional screw rod 1103 can control the two groups of driving plates 1104 to be mutually close and clamp the connected wires, the rotating plate 1101 can be directly loosened after the clamping is completed, the rotating plate 1101 can be automatically fixed with the connecting shell 3 through the cooperation between the clamping blocks 12 and the clamping grooves 9 under the pulling force of the springs 13, and the bending damage caused by the bending amplitude of the connecting wires due to the rotation of the driving plates 1104 can be avoided when the wires shake and rotate.

To sum up: this signal converter convenient to installation, through quick install and tear subassembly 10 open and the cooperation between the line protection fixed subassembly 11, solved and signal converter when installing and use in the rack inside, generally all need rotate the screw in four corners and install fixedly with the rack inside, and the four corners screw not only need professional instrument rotate, at the in-process of installing and tearing open, do not need rotate gradually four positions, this is time consuming and laborious when just leading to the installation, can not make things convenient for quick installation and dismantlement, the one end of signal converter one side connecting wire simultaneously, the line link is compactly fixed for fixed line can adopt the rotation bolt to come, and the transmission rotation bolt needs corresponding instrument to rotate, can not carry out convenient and fast's problem when the time of becoming flexible appears.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Signal converter convenient to install, including converter main part (1), its characterized in that: the novel transformer is characterized in that mounting plates (4) are arranged at two ends of the transformer body (1), two groups of mounting plates (4) are arranged on the upper surface of the transformer body, a protective shell (2) is arranged inside the protective shell (2), quick assembly and disassembly components (10) are arranged inside the protective shell, threaded holes are formed in two ends of the upper surface of the mounting plates (4), multiple groups of threaded holes are formed in the inner sides of the threaded holes through threaded connection with screw rods (5), the screw rods (5) are movably connected with the threaded holes through the quick assembly and disassembly components (10), a connecting shell (3) is arranged on one side of the transformer body, multiple groups of circuit connecting holes are formed in one side of the connecting shell (3), circuit protection fixing components (11) with the same groups of the connecting holes are arranged on the upper surface of the connecting shell, and circuit clamping plates (8) are movably connected to the two ends inside the circuit connection holes through the circuit protection fixing components (11).

2. A signal converter for facilitating installation as defined in claim 1, wherein: the quick assembly and disassembly device is characterized in that the quick assembly and disassembly device (10) comprises two groups of synchronous wheels (102), a synchronous belt (103) is sleeved between the two groups of synchronous wheels (102), the two groups of synchronous wheels (102) are respectively connected with the upper ends of the two groups of screws (5), and the two groups of synchronous wheels (102) are movably connected inside the protective shell (2).

3. A signal converter for facilitating installation as defined in claim 2, wherein: the movable groove is formed in the bottom of the protective shell (2), a group of driving rotating rods (101) are fixedly mounted in the middle of the upper surface of the synchronous wheel (102), the driving rotating rods (101) penetrate through one end of the upper surface of the protective shell (2), and rotating holes are formed in one end of the upper surface of the protective shell (2).

4. A signal converter for facilitating installation as claimed in claim 3, wherein: the two groups of synchronous wheels (102) are provided with sliding grooves at the edge parts on the upper surfaces, the two groups of the sliding grooves are movably connected with a sliding circular plate (6) inside, a guide plate (7) is fixedly arranged on the upper surface of the sliding circular plate (6), and one end of the guide plate (7) is in sliding connection with one side of the inside of the movable groove.

5. A signal converter for facilitating installation as defined in claim 1, wherein: the circuit protection fixing assembly (11) comprises a bidirectional screw rod (1103), two ends of the side wall of the bidirectional screw rod (1103) are respectively connected with a driving plate (1104) through threads, lifting grooves opposite to the driving plates (1104) are formed in one side of the inside of the circuit connecting hole, the bidirectional screw rod (1103) is rotatably mounted in the lifting grooves, and two groups of circuit clamping plates (8) are rotatably mounted at one ends of the opposite sides of the two groups of driving plates (1104) respectively.

6. A signal converter for facilitating installation as defined in claim 5, wherein: the bidirectional screw rod is characterized in that a driving rod (1102) is fixedly arranged at the upper end of the bidirectional screw rod (1103), the driving rod (1102) penetrates through the upper surface of the connecting shell (3) to the lifting groove, a plurality of groups of penetrating holes opposite to the driving rod (1102) are formed in the upper surface of the connecting shell (3), and the upper surface of the driving rod (1102) is elastically connected with a rotating plate (1101).

7. A signal converter for facilitating installation as defined in claim 6, wherein: square pole (14) is fixedly installed to rotating plate (1101) bottom, square groove has been seted up to square pole (14) lower extreme fixed mounting, square pole (1102) upper end, square pole (14) one end slidable mounting is inside square groove, spring (13) one end and square groove volume inside lower extreme fixed connection, rotating plate (1101) bottom is provided with multiunit equidistant joint piece (12) along the edge, joint groove (9) for joint piece (12) have been seted up to connection shell (3) upper surface, joint piece (12) and joint groove (9) block.