Mounting structure of safety belt decorative plate
By designing a seat belt decorative board installation structure that includes installation, adjustment parts and fixed pieces, the problem of universal installation structure in the existing technology is solved, and the stable connection and seat belt of different models and brand cars B -pillars are realized. Normal use.
Patent Information
- Application Number
- CN202421242908.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-06-03
AI Technical Summary
The installation structure of the existing seat belt decorative panel is not versatile enough to adapt to the B-pillar of different models and brands of cars, and is not firmly installed or misaligned, which may affect the normal use of the seat belt, and may even be used to passengers in an emergency situation. poses a threat to security.
The installation structure of a seat belt decorative board is designed, including installation, adjustment parts and fixed pieces. By fixed adhesion, activity replacement, and insertion, a stable connection to the B -pillar of the car is realized. The cooperation of the guidance column adapts to B -pillar of different sizes.
The installation structure enhances the stability of the seat belt decorative board, and prevent the decorative board from being loose or displaced due to vibration or external force during the vehicle driving process. Belt normal use and passenger security.
Smart Images

Figure CN222408189U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of safety belt decorative plates, in particular to a mounting structure of a safety belt decorative plate. Background Art
[0002] There are a large number of plastic parts inside the car, which are usually made by injection molding. Seat belt decorative panels are one of them. Their main function is to cover and fix the seat belt inserts, thereby improving the aesthetics and safety of the car interior. With the continuous development of the automobile industry and the increasing requirements of consumers for the aesthetics and safety of the car interior, new seat belt decorative panels and their installation structures have broad market application prospects.
[0003] Currently, the installation structures of most seat belt decorative panels on the market are not universal enough and cannot be installed on the B-pillars of cars of different models and brands. If the decorative panels are not installed firmly or are misplaced, it may affect the normal use of the seat belts and even pose a threat to the safety of passengers in an emergency. Utility Model Content
[0004] The purpose of the utility model is to provide a mounting structure for a seat belt decorative plate, so as to solve the problem that most of the mounting structures for seat belt decorative plates mentioned in the above background technology are not sufficiently universal. To achieve the above purpose, the utility model provides the following technical solutions: a mounting structure for a seat belt decorative plate, comprising a mounting member, one side of the mounting member is fixedly bonded to one side of an adjusting member, one side of the adjusting member is movably abutted to one side of a fixing member, and an outer wall of the fixing member near one end is movably plugged into an inner wall of the mounting member.
[0005] The inner wall of the mounting piece is slidably connected to the outer wall of the safety belt interface, the inner wall of the safety belt interface is movably abutted against the outer wall of the locking piece, and the outer wall of the locking piece is slidably connected to the inner wall of the mounting piece close to the front side.
[0006] Preferably, the mounting component is composed of a vehicle B-pillar, a fixing plate, a decorative plate and an anti-slip block, and one side of the vehicle B-pillar is fixedly bonded to one side of the fixing plate, the side of the fixing plate close to the vehicle B-pillar is fixedly welded to one side of the decorative plate, and the back side of the decorative plate is fixedly connected to the front side of the anti-slip block, the back side of the anti-slip block is movably abutted against the front side of the vehicle B-pillar, and the inner wall of the decorative plate away from the fixing plate is provided with two guide grooves and two grooves, an accommodating cavity is provided on the inner wall at the center of the decorative panel, and slide grooves are provided on both sides of the accommodating cavity, and a plurality of locking grooves are provided on one side of the two slide grooves.
[0007] Preferably, the adjusting member includes an adjusting plate, a guide column and an adjusting spring, and the number of the guide columns and the adjusting springs are both set to two, the outer side walls of the adjusting plate close to the top and the bottom are respectively fixedly connected to one end of the two guide columns, and the outer side walls of the adjusting plate close to the two guide columns are respectively fixedly connected to one end of the two adjusting springs, the outer walls of the two guide columns are respectively slidably connected to the inner walls of the two guide grooves, and the other ends of the two adjusting springs are respectively fixedly connected to the inner walls of the two grooves, and the side of the adjusting plate close to the two guide columns is fixedly bonded to the side of the B-pillar of the automobile away from the fixed plate.
[0008] Preferably, the fixing part consists of an insertion rod, a limiting plate and a locking cover, and one end of the insertion rod is fixedly welded to one side of the limiting plate, the outer wall of the other end of the insertion rod is threadedly connected to the inner wall of the locking cover, and the outer wall of the insertion rod near one end is movably plugged into the inner wall of the fixing plate, one side of the limiting plate is movably abutted against a side of the fixing plate away from the B-pillar of the automobile, and the outer wall of the insertion rod near the other end is movably plugged into the inner wall of the adjustment plate, and one side of the locking cover is movably abutted against a side of the adjustment plate away from the B-pillar of the automobile.
[0009] Preferably, the seat belt interface includes a moving block, two sliding blocks, a connecting plate, a fixed shaft and a seat belt connecting block, and a sliding block is respectively arranged on both sides of the moving block, the front side of the moving block is fixedly connected to the back side of the connecting plate, and the inner side walls of the connecting plate near the bottom on both sides are respectively fixedly connected to the two ends of the fixed shaft, the outer wall of the fixed shaft is rotatably connected to the inner wall of the seat belt connecting block near the top, and a seat belt groove is provided on the inner wall of the seat belt connecting block near the bottom, the outer wall of the moving block is slidably connected to the inner wall of the accommodating cavity, and the outer walls of the two sliding blocks are slidably connected to the inner walls of the two sliding grooves respectively.
[0010] Preferably, the locking member is composed of a locking spring, a locking block, a transmission block and a toggle rod, and the number of the locking springs, the locking block and the transmission block is set to multiple, the number of the toggle rods is set to two, and each locking spring, the locking block and the transmission block form a group, one end of the locking spring is fixedly connected to one side of the locking block, and the front side of the locking block is fixedly connected to the back side of the transmission block, multiple groups of the locking springs, the locking blocks and the transmission blocks are respectively arranged in multiple locking grooves, and the other ends of the multiple groups of locking springs are respectively fixedly connected to the inner side walls of the multiple locking grooves, the outer walls of the multiple groups of locking blocks are respectively slidably connected to the inner walls of the multiple locking grooves close to the back, and the outer walls of the multiple groups of transmission blocks are respectively slidably connected to the inner walls of the multiple locking grooves close to the front, the multiple transmission blocks are divided into two groups, and the front sides of the two groups of transmission blocks are respectively fixedly connected to the back sides of the two toggle rods, the multiple locking blocks are symmetrically arranged with the center line of the moving block as the axis, and the outer walls of two symmetrically arranged locking blocks are respectively movably abutted against the inner walls of the two sliding blocks.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] In the utility model, during installation, the fixing plate is first adhered to one side of the B-pillar of the automobile, and then the adjusting plate is pulled, and the guide column slides along the guide groove. When the distance between the adjusting plate and the fixing plate is the same as the width of the B-pillar of the automobile, the adjusting plate is adhered to the other side of the B-pillar of the automobile, and the insertion rod is inserted at this time. The insertion rod passes through the fixing plate, the B-pillar of the automobile and the adjusting plate and then comes out. The limit plate will be close to the fixing plate, and the locking cover is tightened to make it close to the adjusting plate, thereby enhancing the stability of the entire safety belt decorative plate system, preventing the loosening or displacement of the safety belt decorative plate due to vibration or external force during vehicle driving, and the adjustable installation structure allows the decorative plate system to adapt to B-pillars of different sizes, which is convenient for people to use.
[0013] In the utility model, when the height of the seat belt needs to be adjusted, the transmission block is driven to move by moving the toggle rod, and then the locking block is driven to move, so that the locking block slides out from the inner wall of the sliding block. At this time, the moving block can be moved, and the toggle rod is released after moving to a suitable height. The locking block is locked by the elastic force of the locking spring, thereby preventing the moving block and the sliding block from moving unnecessarily during the driving of the vehicle. The height of the seat belt can be adjusted to accommodate passengers of different heights or body shapes. The appropriate seat belt height can ensure that the passengers are comfortable and safe when wearing the seat belt. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 It is a cross-sectional view of the utility model;
[0016] Figure 3 It is an exploded view of the utility model;
[0017] Figure 4 It is an exploded view of the locking member in the utility model.
[0018] In the figure: 1. Mounting part; 101. Automobile B-pillar; 102. Fixing plate; 103. Decorative plate; 104. Anti-sliding block; 2. Adjusting part; 201. Adjusting plate; 202. Guide column; 203. Adjusting spring; 3. Fixing part; 301. Insert rod; 302. Limiting plate; 303. Locking cover; 4. Seat belt interface; 401. Moving block; 402. Sliding block; 403. Connecting plate; 404. Fixed shaft; 405. Seat belt connecting block; 5. Locking part; 501. Locking spring; 502. Locking block; 503. Transmission block; 504. Toggle lever. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figures 1 to 4 The utility model provides a technical solution: a mounting structure of a seat belt decorative plate, comprising a mounting member 1, one side of the mounting member 1 is fixedly bonded to one side of an adjusting member 2, one side of the adjusting member 2 is movably abutted to one side of a fixing member 3, and an outer wall of the fixing member 3 near one end is movably plugged into an inner wall of the mounting member 1.
[0021] The inner wall of the mounting member 1 is slidably connected to the outer wall of the safety belt interface 4, the inner wall of the safety belt interface 4 is movably abutted against the outer wall of the locking member 5, and the outer wall of the locking member 5 is slidably connected to the inner wall of the mounting member 1 near the front.
[0022] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the mounting member 1 is composed of a vehicle B-pillar 101, a fixing plate 102, a decorative plate 103 and an anti-slip block 104, and one side of the vehicle B-pillar 101 is fixedly bonded to one side of the fixing plate 102, the side of the fixing plate 102 close to the vehicle B-pillar 101 is fixedly welded to one side of the decorative plate 103, and the back side of the decorative plate 103 is fixedly connected to the front side of the anti-slip block 104, the back side of the anti-slip block 104 is movably abutted against the front side of the vehicle B-pillar 101, and the inner wall of the decorative plate 103 away from the fixing plate 102 is provided with two guide grooves and two grooves, the inner wall at the center of the decorative plate 103 is provided with an accommodating cavity, and both sides of the accommodating cavity are provided with sliding grooves, and one side of the two sliding grooves is provided with multiple locking grooves, when the decorative plate 103 is subjected to external force, the anti-slip block 104 can provide additional friction to prevent relative displacement between the decorative plate 103 and the B-pillar.
[0023] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the adjusting member 2 includes an adjusting plate 201, a guide column 202 and an adjusting spring 203, and the number of the guide column 202 and the adjusting spring 203 are both set to two, the outer side walls of the adjusting plate 201 close to the top and the bottom are respectively fixedly connected to one end of the two guide columns 202, and the outer side walls of the adjusting plate 201 close to the two guide columns 202 are respectively fixedly connected to one end of the two adjusting springs 203, the outer walls of the two guide columns 202 are respectively slidably connected to the inner walls of the two guide grooves, and the other ends of the two adjusting springs 203 are respectively fixedly connected to the inner walls of the two grooves, and the side of the adjusting plate 201 close to the two guide columns 202 is far from the B-pillar 101 of the automobile. The fixing plate 102 is fixedly bonded to one side of the automobile B-pillar 101. During installation, the fixing plate 102 is first bonded to one side of the automobile B-pillar 101, and then the adjusting plate 201 is pulled. The guide column 202 slides along the guide groove, and the adjusting spring 203 is deformed to adapt to the width of the B-pillar. When the distance between the adjusting plate 201 and the fixing plate 102 is the same as the width of the automobile B-pillar 101, the adjusting plate 201 is bonded to the other side of the automobile B-pillar 101. The adjustable installation structure allows the decorative panel system to adapt to B-pillars of different sizes. The guide column 202 not only helps the adjusting plate 201 to slide along the guide groove, but also provides support for the connection between the decorative panel 103 and the adjusting plate 201.
[0024] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the fixing member 3 is composed of an insert rod 301, a limiting plate 302 and a locking cover 303, and one end of the insert rod 301 is fixedly welded to one side of the limiting plate 302, the outer wall of the other end of the insert rod 301 is threadedly connected to the inner wall of the locking cover 303, and the outer wall of the insert rod 301 close to one end is movably plugged into the inner wall of the fixing plate 102, one side of the limiting plate 302 is movably abutted against the side of the fixing plate 102 away from the B-pillar 101 of the automobile, and the outer wall of the insert rod 301 close to the other end is movably plugged into the inner wall of the adjustment plate 201, and one side of the locking cover 303 The fixing plate 102 and the adjusting plate 201 are bonded to the B-pillar 101 of the automobile, and then the insertion rod 301 is inserted. The insertion rod 301 passes through the fixing plate 102, the B-pillar 101 of the automobile and the adjusting plate 201 and then comes out. The limiting plate 302 will be in close contact with the fixing plate 102, and the locking cover 303 is tightened to make it close to the adjusting plate 201, thereby enhancing the stability of the entire seat belt decorative plate system and preventing the seat belt decorative plate from loosening or displacement due to vibration or external force during vehicle driving.
[0025] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the seat belt interface 4 includes a moving block 401, two sliding blocks 402, a connecting plate 403, a fixed shaft 404 and a seat belt connecting block 405, and a sliding block 402 is respectively arranged on both sides of the moving block 401, the front side of the moving block 401 is fixedly connected to the back side of the connecting plate 403, and the inner side walls of the connecting plate 403 near the bottom of both sides are respectively fixedly connected to the two ends of the fixed shaft 404, the outer wall of the fixed shaft 404 is rotatably connected to the inner wall near the top of the seat belt connecting block 405, and the inner wall near the bottom of the seat belt connecting block 405 is provided with a seat belt groove, the outer wall of the moving block 401 is slidably connected to the inner wall of the accommodating cavity, and the outer walls of the two sliding blocks 402 are slidably connected to the inner walls of the two sliding grooves, respectively, by sliding the moving block 401, the position of the seat belt connecting block 405 and the seat belt groove thereon can be conveniently adjusted to accommodate passengers of different heights or body shapes, and the appropriate seat belt height can ensure that passengers are both comfortable and safe when wearing seat belts.
[0026] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the locking member 5 is composed of a locking spring 501, a locking block 502, a transmission block 503 and a toggle rod 504, and the number of the locking spring 501, the locking block 502 and the transmission block 503 is set to multiple, the number of the toggle rod 504 is set to two, and each locking spring 501, the locking block 502 and the transmission block 503 is a set, one end of the locking spring 501 is fixedly connected to one side of the locking block 502, and the front side of the locking block 502 is connected to the transmission block 50 3, multiple groups of locking springs 501, locking blocks 502 and transmission blocks 503 are respectively arranged in multiple locking grooves, and the other ends of multiple groups of locking springs 501 are respectively fixedly connected to the inner side walls of the multiple locking grooves, the outer walls of multiple groups of locking blocks 502 are respectively slidably connected to the inner walls of the multiple locking grooves near the back, and the outer walls of multiple groups of transmission blocks 503 are respectively slidably connected to the inner walls of the multiple locking grooves near the front, and the multiple transmission blocks 503 are divided into two groups, and the two transmission blocks The front side of the block 503 is fixedly connected to the back side of the two toggle rods 504 respectively, and the multiple locking blocks 502 are symmetrically arranged with the center line of the moving block 401 as the axis, and the outer walls of two symmetrically arranged locking blocks 502 are movably abutted against the inner walls of the two sliding blocks 402 respectively. When the moving block 401 and the sliding block 402 are adjusted to a suitable position, the locking block 502 will be tightly attached to the inner wall of the sliding block 402 under the action of the locking spring 501 to form a locked state. When the seat belt height needs to be adjusted, the transmission block 503 is driven to move by moving the toggle rod 504, and then the locking block 502 is driven to move, so that the locking block 502 slides out from the inner wall of the sliding block 402. At this time, the moving block 401 can be moved, and the toggle rod 504 is released after moving to a suitable height. The locking block 502 is subjected to the elastic force of the locking spring 501 to enter the sliding block 402 and be locked, thereby preventing the moving block 401 and the sliding block 402 from unnecessary movement during the driving of the vehicle.
[0027] The use method and advantages of the utility model: When the installation structure of the safety belt decorative plate is working, the working process is as follows:
[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, during installation, the fixing plate 102 is first adhered to one side of the automobile B-pillar 101, and then the adjusting plate 201 is pulled, and the guide column 202 slides along the guide groove. When the distance between the adjusting plate 201 and the fixing plate 102 is the same as the width of the automobile B-pillar 101, the adjusting plate 201 is adhered to the other side of the automobile B-pillar 101, and the insertion rod 301 is inserted at this time. The insertion rod 301 passes through the fixing plate 102, the automobile B-pillar 101 and the adjusting plate 201 and then comes out. The limit plate 302 will be close to the fixing plate 102, and the locking cover 303 is tightened to make it close to the adjusting plate 201, thereby enhancing the stability of the entire seat belt decorative plate system and preventing the seat belt decorative plate from loosening or displacement due to vibration or external force during vehicle driving. The installation structure of the joint allows the decorative panel system to adapt to B-pillars of different sizes, which is convenient for people to use. When the seat belt height needs to be adjusted, the transmission block 503 is driven to move by moving the toggle rod 504, and then the locking block 502 is driven to move, so that the locking block 502 slides out from the inner wall of the sliding block 402. At this time, the moving block 401 can be moved, and after moving to a suitable height, the toggle rod 504 is released, and the locking block 502 is locked by the elastic force of the locking spring 501 to prevent the moving block 401 and the sliding block 402 from moving unnecessarily during the driving of the vehicle. The seat belt height can be adjusted to adapt to passengers of different heights or body shapes. The appropriate seat belt height can ensure that passengers are comfortable and safe when wearing seat belts.
[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A mounting structure for a seat belt decorative plate, comprising a mounting member (1), characterized in that: One side of the mounting member (1) is fixedly bonded to one side of the adjusting member (2), one side of the adjusting member (2) is movably abutted against one side of the fixing member (3), and an outer wall of the fixing member (3) near one end is movably plugged into an inner wall of the mounting member (1); The inner wall of the mounting member (1) is slidably connected to the outer wall of the safety belt interface (4), the inner wall of the safety belt interface (4) is movably abutted against the outer wall of the locking member (5), and the outer wall of the locking member (5) is slidably connected to the inner wall of the mounting member (1) near the front.
2. The installation structure of a seat belt decorative plate according to claim 1, characterized in that: The mounting member (1) is composed of a vehicle B-pillar (101), a fixing plate (102), a decorative plate (103) and an anti-slip block (104), and one side of the vehicle B-pillar (101) is fixedly bonded to one side of the fixing plate (102), a side of the fixing plate (102) close to the vehicle B-pillar (101) is fixedly welded to one side of the decorative plate (103), and the back side of the decorative plate (103) is fixedly connected to the front side of the anti-slip block (104), the back side of the anti-slip block (104) is movably abutted against the front side of the vehicle B-pillar (101), and the inner wall of the decorative plate (103) away from the fixing plate (102) is provided with two guide grooves and two grooves, and the inner wall at the center of the decorative plate (103) is provided with a receiving cavity, and both sides of the receiving cavity are provided with slide grooves, and one side of the two slide grooves is provided with a plurality of locking grooves.
3. The installation structure of a seat belt decorative plate according to claim 2, characterized in that: The adjusting member (2) comprises an adjusting plate (201), a guide column (202) and an adjusting spring (203), and the number of the guide column (202) and the adjusting spring (203) are both set to two, the outer side walls of the adjusting plate (201) close to the top and the bottom are respectively fixedly connected to one end of the two guide columns (202), and the outer side walls of the adjusting plate (201) close to the two guide columns (202) are respectively fixedly connected to one end of the two adjusting springs (203), the outer walls of the two guide columns (202) are respectively slidably connected to the inner walls of the two guide grooves, and the other ends of the two adjusting springs (203) are respectively fixedly connected to the inner walls of the two grooves, and the side of the adjusting plate (201) close to the two guide columns (202) is fixedly bonded to the side of the automobile B-pillar (101) away from the fixing plate (102).
4. The installation structure of a seat belt decorative plate according to claim 3, characterized in that: The fixing member (3) is composed of an insert rod (301), a limiting plate (302) and a locking cover (303), and one end of the insert rod (301) is fixedly welded to one side of the limiting plate (302), the outer wall of the other end of the insert rod (301) is threadedly connected to the inner wall of the locking cover (303), and the outer wall of the insert rod (301) close to one end is movably plugged into the inner wall of the fixing plate (102), one side of the limiting plate (302) is movably abutted against a side of the fixing plate (102) away from the B-pillar (101) of the automobile, and the outer wall of the insert rod (301) close to the other end is movably plugged into the inner wall of the adjustment plate (201), and one side of the locking cover (303) is movably abutted against a side of the adjustment plate (201) away from the B-pillar (101) of the automobile.
5. The installation structure of a seat belt decorative plate according to claim 2, characterized in that: The safety belt interface (4) comprises a moving block (401), two sliding blocks (402), a connecting plate (403), a fixed shaft (404) and a safety belt connecting block (405), and a sliding block (402) is respectively arranged on both sides of the moving block (401), the front side of the moving block (401) is fixedly connected to the back side of the connecting plate (403), and the inner side walls of the connecting plate (403) close to the bottom of both sides are respectively fixedly connected to the two ends of the fixed shaft (404), the outer wall of the fixed shaft (404) is rotatably connected to the inner wall of the safety belt connecting block (405) close to the top, and the inner wall of the safety belt connecting block (405) close to the bottom is provided with a safety belt groove, the outer wall of the moving block (401) is slidably connected to the inner wall of the accommodating cavity, and the outer walls of the two sliding blocks (402) are respectively slidably connected to the inner walls of the two sliding grooves.
6. The installation structure of a seat belt decorative plate according to claim 5, characterized in that: The locking member (5) is composed of a locking spring (501), a locking block (502), a transmission block (503) and a toggle rod (504), and the number of the locking spring (501), the locking block (502) and the transmission block (503) is set to be multiple, the number of the toggle rod (504) is set to be two, and each locking spring (501), the locking block (502) and the transmission block (503) is a group, one end of the locking spring (501) is fixedly connected to one side of the locking block (502), and the front side of the locking block (502) is fixedly connected to the back side of the transmission block (503), and the multiple groups of the locking spring (501), the locking block (502) and the transmission block (503) are respectively set In the plurality of locking grooves, the other ends of the plurality of locking springs (501) are respectively fixedly connected to the inner side walls of the plurality of locking grooves, the outer walls of the plurality of locking blocks (502) are respectively slidably connected to the inner walls of the plurality of locking grooves near the back, and the outer walls of the plurality of transmission blocks (503) are respectively slidably connected to the inner walls of the plurality of locking grooves near the front, the plurality of transmission blocks (503) are divided into two groups, and the front sides of the two groups of transmission blocks (503) are respectively fixedly connected to the back sides of the two toggle rods (504), the plurality of locking blocks (502) are symmetrically arranged with the center line of the moving block (401) as the axis, and the outer walls of two symmetrically arranged locking blocks (502) are respectively movably abutted against the inner walls of the two sliding blocks (402).