Selection control mechanism of multi-mode safety belt and multi-mode safety belt child seat

Abstract

The invention discloses a multi-mode safety belt selection control mechanism and a multi-mode safety belt child seat, and the selection control mechanism comprises a supporting mechanism which is used for supporting a child seat safety belt during unfolding and can be folded. A limiting mechanism for limiting the height of the headrest and a control mechanism for controlling the unfolding and folding states of the supporting mechanism and enabling the limiting mechanism to synchronously adjust the height of the headrest are arranged on one side of the supporting mechanism, so that the supporting mechanism corresponds to the low height of the headrest in the unfolding state and corresponds to the high height of the headrest in the folding state; the selection control mechanism can limit the headrest adjusting height and associate the headrest height limitation with the unfolding and folding states of the supporting mechanism, the corresponding safety belt using conditions of the child are divided, and the situation that a user misuses the safety belt, and potential safety hazards are caused to the child is prevented.

Description

[Technical field] The present invention relates to the technical field of safety seats, and in particular to a selection control mechanism for a multi-mode safety belt and a multi-mode safety belt child seat. [Background technology] With the increasing popularity of cars and the public's increasing awareness of child safety in cars, the application of child safety seats in cars is becoming more and more widespread. In vehicle collision accidents, child safety seats play a vital protective role in reducing the risk of casualties among child passengers. In existing child safety seats, young children use the child safety seat's own seat belts, while older children are unable to clearly distinguish whether to use the child safety seat's own seat belts or the car's own seat belts when using child safety seats. When the car is hit, older children may fall out of the car seat because of their heavier weight, posing a safety hazard in the use of child safety seats. [Summary of the invention] In order to overcome the problem that older children cannot clearly distinguish whether to use the seat belt of the child safety seat itself or the seat belt of the car itself when using the child safety seat, which poses a safety hazard during the use of the child safety seat, the technical problem to be solved by the present invention is to provide a multi-mode seat belt selection control mechanism and a multi-mode seat belt seat, and the present invention is achieved by the following technical solutions: A multi-mode safety belt selection control mechanism, the selection control mechanism includes a support mechanism for supporting a child seat safety belt when deployed and capable of being folded, a limit mechanism for limiting the height of a headrest and a control mechanism for controlling the deployment and folding states of the support mechanism and enabling the limit mechanism to synchronously adjust the height of the headrest, so that the support mechanism corresponds to a low headrest height in the deployed state and corresponds to a high headrest height in the folded state.

[0004] A selection control mechanism for a multi-mode seat belt as described above, the control mechanism includes a locking switch for releasing the support mechanism from the expanded and folded state and releasing the height adjustment limit of the limit mechanism, and a locking mechanism for locking the support mechanism from the expanded and folded state and limiting the limit mechanism from adjusting the headrest height.

[0005] As described above, a selection control mechanism for a multi-mode seat belt, the locking mechanism includes a first locking part for matching and connecting with a locking switch so that the locking switch can unlock the connection between a supporting mechanism and the locking mechanism, the first locking part is connected to a second locking part for locking the supporting mechanism in an expanded and folded state, and the second locking part is connected to a third locking part for matching and connecting with a limiting mechanism.

[0006] In the selection control mechanism for a multi-mode seat belt as described above, the first locking portion includes a first inclined surface for abutting against the locking switch and a first mounting hole that enables the locking mechanism to be reset, and a spring can be installed on the first mounting hole to enable the locking mechanism to be reset.

[0007] In a selection control mechanism for a multi-mode seat belt as described above, the second locking portion includes a first protrusion that can be engaged with a support mechanism, the first protrusion is provided with a first engaging surface that is engaged with the support mechanism at a low headrest height, a second engaging surface that is engaged with the support mechanism at a high headrest height, and a pushing surface that enables a user to push the locking mechanism.

[0008] As described above, a selection control mechanism for a multi-mode seat belt, the third locking part includes a first connecting rod for connecting with the second locking part and a third clamping piece for clamping in a limiting mechanism, the first connecting rod is provided with a first buckle for connecting with the third clamping piece, the third clamping piece is provided with a buckle hole for accommodating the first buckle and a third clamping protrusion for clamping in the limiting mechanism, and the first connecting rod and the third clamping piece are provided with a spring so that the third clamping piece can be extended and retracted toward the first connecting rod.

[0009] A multi-mode seat belt selection control mechanism as described above, the support mechanism includes a first support member for connecting and supporting the shoulder strap portion of the seat belt, the first support member is provided with a rotating cylinder, the first support member can rotate according to the axis of the rotating cylinder, the first support member is connected to a limiting block for limiting the rotation of the first support member, the limiting block is provided with a cylindrical groove for accommodating the rotating cylinder and a first limiting hole for limiting the movement of the first protrusion.

[0010] In a selection control mechanism for a multi-mode seat belt as described above, the locking switch includes a pressing portion for a user to press and an abutting portion that abuts against the locking mechanism to move the locking mechanism after the user presses it, the pressing portion is provided with a pressing surface for the user to press, and the abutting portion is provided with a second inclined surface for cooperating and connecting with the first inclined surface.

[0011] A selection control mechanism for a multi-mode seat belt as described above, the limiting mechanism includes a first slide groove for sliding the third clamping protrusion when the headrest slides at a low height position and a second slide groove for sliding the third clamping protrusion when the headrest slides at a high height position, a conversion part is provided between the first slide groove and the second slide groove so that the headrest height can be converted between the low headrest height position and the high headrest height position, the conversion part includes a first conversion member and a second conversion member, the first conversion member is a first triangular protrusion, the second conversion member is a second triangular protrusion, the first triangular protrusion and the second triangular protrusion are invertedly distributed, and a third slide groove is provided between the hypotenuses of the first triangular protrusion and the second triangular protrusion so that the first slide groove and the second slide groove are interconnected.

[0012] A multi-mode safety belt child seat comprises a seat back, wherein the seat back is provided with a headrest with adjustable height, a seat belt for protecting a child is provided on one side of the headrest, and the seat back is provided with a selection control mechanism as described above, wherein the selection control mechanism allows a user to adjust the height of the headrest according to the child's body shape and select a use mode of the safety belt.

[0013] Compared with the prior art, the present invention has the following advantages: 1. By selecting the control mechanism to control the expansion and folding state of the support mechanism and making the limit mechanism adjust the headrest height synchronously, the control mechanism can be selected to limit the headrest adjustment height and link the headrest height limit with the expansion and folding state of the support mechanism, so as to classify the corresponding seat belt use situations of children, and facilitate users to distinguish young children using the child seat's own seat belts in child seats and older children using the car's own seat belts for protection in child seats, so as to facilitate users to distinguish between the use of child seat belts or car seat belts to prevent misuse and cause safety hazards to children.

[0014] 2. Through the linkage of the supporting mechanism, the locking mechanism, the locking switch and the limiting mechanism, the height of the headrest can be switched between a low position and a high position. Simply by pressing the locking switch, the first supporting member on the supporting mechanism will be folded downward under the action of gravity. The operation is simple and convenient.

[0015] 3. By expanding and contracting the first support member, the headrest height corresponds to the low position and the high position of the headrest, which makes it convenient for the user to identify the usage status of the seat back and then adjust the seat back height.

Brief Description of the Drawings

[0017] Figure 1 The present invention is a schematic diagram of a multi-mode safety belt child seat in use with a headrest in a high position.

[0018] Figure 2 The present invention is a schematic diagram of the internal structure of a multi-mode safety belt child seat in a high-position use state of the headrest.

[0019] Figure 3 The present invention is a schematic diagram of a multi-mode safety belt child seat in use with a headrest in a low position.

[0020] Figure 4 The present invention is a schematic diagram of the internal structure of a multi-mode safety belt child seat in a low-height usage state of the headrest.

[0021] Figure 5 The present invention is a schematic diagram of a locking mechanism and a locking switch of a selection control mechanism of a multi-mode safety belt.

[0022] Figure 6 The present invention is a schematic diagram of a locking mechanism for a selection control mechanism of a multi-mode safety belt.

[0023] Figure 7 It is a three-dimensional schematic diagram of a locking mechanism of a selection control mechanism of a multi-mode safety belt of the present invention.

[0024] Figure 8 It is a schematic diagram of a selection control mechanism, a support mechanism and a locking mechanism of a multi-mode safety belt of the present invention.

[0025] Fig. 9 The present invention is a schematic diagram of a support mechanism for a selection control mechanism of a multi-mode safety belt.

[0026] Fig.10 The present invention is a schematic diagram of a selection control mechanism limiting block of a multi-mode safety belt.

[0027] Fig.11 The present invention is a schematic diagram of a locking switch of a selection control mechanism of a multi-mode safety belt.

[0028] Fig.12 The present invention is a stereoscopic schematic diagram of a locking mechanism and a locking switch of a selection control mechanism of a multi-mode safety belt.

[0029] Fig.13 The present invention is a schematic diagram of a selection control mechanism and a limiting mechanism of a multi-mode safety belt.

[0030] Fig.14 An enlarged schematic diagram of A of a selection control mechanism for a multi-mode safety belt of the present invention. [Specific implementation method] In order to make the technical problems, technical solutions and beneficial effects solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] Example 1: Please refer to Figure 1-14 , a multi-mode seat belt selection control mechanism, the selection control mechanism 100 includes a support mechanism 1 for supporting the child seat belt when deployed and capable of being folded, a limit mechanism 5 for limiting the height of the headrest is provided on one side of the support mechanism 1, and a control mechanism 20 for controlling the deployment and folding states of the support mechanism 1 and making the limit mechanism 5 synchronously adjust the height of the headrest, the control mechanism 20 makes the support mechanism 1 correspond to a low headrest height in the deployed state and a high headrest height in the folded state, the support mechanism 1 is in a low headrest height position in the deployed state, and the young child uses the child seat's own seat belt in the low headrest height position, and the support mechanism is in a high headrest height position in the folded state. When the headrest is in the high position, older children use the car's own seat belts. The expanded state of the support mechanism is used as the first indicator. When the seat is in the low position, the user uses the child seat's own seat belt to protect young children. The folded state of the support mechanism is used as the second indicator. When the seat is in the high position, the user uses the car's oblique seat belts to protect older children. Thus, the age stages are clearly divided to prevent users from using the seat belts incorrectly, which may cause safety hazards to children. By selecting a control mechanism to limit the seat adjustment height and linking the seat height limit with the locking state of the support mechanism, the corresponding seat belt usage situations of children are divided. The limit mechanism limits the seat height so that the headrest can be adjusted within a certain height. Furthermore, as a preferred implementation mode of the present invention but not a limitation thereof, the control mechanism 20 includes a locking switch 3 for releasing the support mechanism 1 from the expanded and folded states and releasing the height adjustment limit of the limit mechanism 5, and a locking mechanism 2 for locking the support mechanism 1 from the expanded and folded states and limiting the limit mechanism 5 from adjusting the headrest height. Through the linkage of the support mechanism, the locking mechanism and the locking switch, the seat can adjust the height of the headrest between a low position and a high position of the headrest. By pressing the locking switch, the first support member on the support mechanism will be folded downward under the action of gravity, thereby making it convenient for users to use.

[0033] Furthermore, as a preferred embodiment of the present invention but not a limitation, the locking mechanism 2 includes a first locking portion 21 for matching and connecting with the locking switch 3 so that the locking switch 3 can unlock the connection between the support mechanism 1 and the locking mechanism 2, the first locking portion 21 is connected to a second locking portion 22 for locking the support mechanism 1 in the expanded and folded states, the second locking portion 22 is connected to a third locking portion 23 for cooperating with the limiting mechanism 5, the first locking portion 21 and the second locking portion 22 are integrally formed, and the design of the first locking portion 21 and the second locking portion 22 being integrally formed can improve the overall mechanical strength and reliability, reduce the number of parts, reduce assembly complexity, and may reduce production costs.

[0034] Furthermore, as a preferred embodiment of the present invention but not a limitation, the first locking portion 21 includes a first inclined surface 211 for abutting against the locking switch 3 and a first mounting hole 212 for enabling the locking mechanism 2 to be reset. A spring can be installed on the first mounting hole 212 to enable the locking mechanism 2 to be reset. The first inclined surface 211 enables the locking mechanism to undergo a corresponding displacement when pushed by the locking switch. Through the contact between the inclined surface 211 and the locking switch 3, when the locking switch is pressed, the inclined surface converts the horizontal component of force into a force for moving the locking mechanism, thereby achieving an unlocking action.

[0035] Furthermore, as a preferred embodiment of the present invention but not a limitation, the second locking portion 22 includes a first protrusion 221 that can be engaged with the support mechanism 1, the first protrusion 221 is provided with a first engaging surface 2211 that is engaged with the support mechanism 1 at a low headrest height, a second engaging surface 2212 that is engaged with the support mechanism 1 at a high headrest height, and a pushing surface 2213 that enables a user to push the locking mechanism 2. By providing the first engaging surface 2211 and the second engaging surface 2212, the support mechanism 1 can be locked in the expanded and folded states.

[0036] Furthermore, as a preferred embodiment of the present invention rather than a limitation, the third locking portion 23 includes a first connecting rod 231 for connecting to the second locking portion 22 and a third clip 232 for being clipped into the limiting mechanism 5. The first connecting rod 231 is provided with a first clip 2311 for connecting to the third clip 232. The third clip 232 is provided with a clip hole 2321 for accommodating the first clip 2311 and a third clip protrusion 2322 for being clipped into the limiting mechanism 5. The first connecting rod 231 and the third clip 232 are provided with springs so that the third clip 232 can be extended toward the first connecting rod 231. The first clip 2311 and the clip hole 2321 are used in combination to ensure a firm connection between the first connecting rod 231 and the third clip 232. The presence of the spring enables the third clip 232 to automatically reset when not subject to external force.

[0037] Further, as a preferred embodiment of the present invention but not a limitation, the support mechanism 1 includes a first support member 11 for supporting the shoulder strap portion of the safety belt, the first support member 11 is provided with a spring, so that the first support member 11 has elasticity, the first support member 11 is provided with a rotating cylinder 111, the first support member 11 can rotate according to the axis of the rotating cylinder 111, the first support member 11 is connected to a limiting block 12 for limiting the rotation of the first support member 11, the limiting block 12 is provided with a cylindrical groove 121 for accommodating the rotating cylinder 111 and a first protrusion 221 for limiting the movement of A limiting hole 122 is expanded and folded through the first support member, so that the seat back corresponds to the low position of the headrest height and the high position of the headrest height, which is convenient for the user to identify the use status of the seat and then adjust the seat height. When using the seat belt for the corresponding age group, the first support member is sleeved in the seat belt shoulder strap, supporting the seat belt at the low position of the headrest height, which is convenient for parents to use the seat belt and protect young children. The seat belt is folded at the high position of the headrest so that the seat belt fits the backrest, which is convenient for older children to lean on the child seat. At the same time, the seat belt is limited by the first support member to prevent the seat belt from being used in the second height adjustment.

[0038] Further, as a preferred embodiment of the present solution but not a limitation, the locking switch 3 includes a pressing portion 31 for the user to press and an abutting portion 32 for abutting the locking mechanism 2 to move the locking mechanism 2 after the user presses, the pressing portion 31 is provided with a pressing surface 311 for the user to press, and the abutting portion 32 is provided with a second inclined surface 321 for matching and connecting with the first inclined surface 211, and the pressing surface 311 on the pressing portion 31 provides a clear and easy-to-operate interface for the user. The user only needs to simply apply pressure to trigger the unlocking action, and the second inclined surface 321 on the abutting portion 32 is matched and connected with the first inclined surface 211 of the locking mechanism 2. Through the interaction between the inclined surfaces, the user's pressing force can be effectively converted into a thrust parallel to the moving direction of the locking mechanism, thereby achieving accurate and efficient force transmission.

[0039] Further, as a preferred embodiment of the present invention but not a limitation, the limiting mechanism 5 includes a first slide groove 51 for the third clamping protrusion 2322 to slide when the headrest height slides at a low position, and a second slide groove 52 for the third clamping protrusion 2322 to slide when the headrest height slides at a high position, a conversion portion 53 is provided between the first slide groove 51 and the second slide groove 52, which enables the headrest height to be converted between a low headrest height position and a high headrest height position, the conversion portion 53 includes a first conversion member 531 and a second conversion member 532, the first conversion member 531 is a first triangular protrusion, the second conversion member 532 is a second triangular protrusion, the first triangular protrusion and the second triangular protrusion are invertedly distributed, a third slide groove 55 is provided between the hypotenuses of the first triangular protrusion and the second triangular protrusion, which enables the first slide groove 51 and the second slide groove 52 to communicate with each other, the inverted distribution design of the first triangular protrusion and the second triangular protrusion, and the third slide groove 55 on the hypotenuse between them, ensure a smooth conversion from a low headrest height position to a high headrest height position. This design reduces the jamming or discomfort that may occur during the switching stage, thereby improving the user experience. The design of the triangular protrusion enables the third engaging protrusion 2322 to accurately enter and exit the slide slot.

[0040] Embodiment 2: This embodiment provides a multi-mode safety belt child seat, including a seat back 10, wherein the seat back 10 is provided with a headrest 101 with adjustable height, and a seat safety belt 102 for protecting children is provided on one side of the headrest 101. The seat back 10 is provided with a selection control mechanism 100 as described in the above embodiment, and the selection control mechanism allows the user to adjust the height of the headrest according to the child's body shape and select the use mode of the safety belt. The unfolded state of the support mechanism is used as the first identification. When the seat is in a low position of the headrest height, the user uses the child seat's own safety belt to protect young children. The folded state of the support mechanism is used as the second identification. When the seat is in a high position of the headrest height, the user uses the car's oblique safety belt to protect older children. Thus, the age stages are clearly divided to prevent users from using the safety belt incorrectly and causing safety hazards to children.

[0041] The working principle of this embodiment is as follows: A multi-mode safety belt selection control mechanism. When a small-sized young child needs to be placed in a safety seat, the user places the young child on the safety seat at a low headrest height position, and the first support member of the support mechanism unfolds to support the shoulder straps on the safety belt, so that a certain space is left between the shoulder straps on the safety belt and the seat back, making it convenient for the young child to fasten the safety belt. When a large-sized older child needs to be placed, the headrest is pushed to the low headrest height position close to the high position limit, and the third clip is blocked by the first triangular protrusion and cannot enter the high headrest height position. The locking switch is pressed, and the second inclined surface pushes The first inclined surface causes the locking mechanism to move toward the outer side of the seat, and the first protrusion in the second locking portion also moves outward, the first clamping surface no longer clamps the first support member, the first support member is retracted downward under the action of gravity, the first support member clamps the second clamping surface, so that the third clamping member extends a distance, pushing the seat to move upward, the first triangular protrusion no longer blocks the third clamping member, the third clamping member moves into the third sliding groove, the first connecting rod and the third clamping member are provided with a spring so that the third clamping member extends toward the first connecting rod, and then enters the second sliding groove, and the third clamping member is reset under the action of the spring; When the headrest moves from a high headrest height position to a low headrest height position, the third clip is blocked by the second triangular protrusion, the first support is pulled up, the first support is unfolded, the first protrusion in the second locking portion moves inward, the first support is engaged with the first clip surface, locking the unfolded state of the first support, the first buckle pulls the third clip to move inward as well, the second triangular protrusion no longer blocks the third clip, the third clip enters the third slide groove, and then enters the second slide groove, thereby realizing the conversion from a high headrest height position to a low headrest height position.

[0042] The above are implementation methods provided in combination with specific contents, and it is not intended that the specific implementation of this application is limited to these descriptions. Any method structure similar to that of this application, or any technical deduction or replacement based on the concept of this application, shall be deemed to be within the scope of protection of this application.

Claims

1. A multi-mode seat belt selection control mechanism, characterized in that: The selection control mechanism (100) comprises a support mechanism (1) for supporting a child seat belt when deployed and capable of being folded, wherein one side of the support mechanism (1) is provided with a limit mechanism (5) for limiting the height of a headrest, and a control mechanism (20) for controlling the deployment and folding states of the support mechanism (1) and enabling the limit mechanism (5) to synchronously adjust the height of the headrest, so that the support mechanism (1) corresponds to a low headrest height in the deployed state and corresponds to a high headrest height in the folded state.

2. A multi-mode seat belt selection control mechanism according to claim 1, characterized in that The control mechanism (20) comprises a locking switch (3) for releasing the support mechanism (1) from an unfolded or folded state and releasing the height adjustment limit of the limiting mechanism (5), and a locking mechanism (2) for locking the support mechanism (1) from an unfolded or folded state and limiting the limit mechanism (5) from adjusting the height of the headrest.

3. A multi-mode seat belt selection control mechanism according to claim 2, characterized in that The locking mechanism (2) comprises a first locking portion (21) for matching and connecting with a locking switch (3) so that the locking switch (3) can unlock the connection between the supporting mechanism (1) and the locking mechanism (2); the first locking portion (21) is connected to a second locking portion (22) for locking the supporting mechanism (1) in an unfolded or folded state; the second locking portion (22) is connected to a third locking portion (23) for matching and connecting with a limiting mechanism (5).

4. A multi-mode seat belt selection control mechanism according to claim 3, characterized in that The first locking portion (21) comprises a first inclined surface (211) for abutting against the locking switch (3) and a first mounting hole (212) for enabling the locking mechanism (2) to be reset, and a spring can be mounted on the first mounting hole (212) for enabling the locking mechanism (2) to be reset.

5. The multi-mode seat belt selection control mechanism according to claim 3, characterized in that The second locking portion (22) comprises a first protrusion (221) capable of engaging with the support mechanism (1), the first protrusion (221) being provided with a first engaging surface (2211) engaging with the support mechanism (1) at a low position of the headrest, a second engaging surface (2212) engaging with the support mechanism (1) at a high position of the headrest, and a pushing surface (2213) enabling a user to push the locking mechanism (2).

6. A multi-mode seat belt selection control mechanism according to claim 3, characterized in that The third locking portion (23) comprises a first connecting rod (231) for connecting with the second locking portion (22) and a third clamping member (232) for clamping in the limiting mechanism (5); the first connecting rod (231) is provided with a first clamping buckle (2311) for connecting with the third clamping member (232); the third clamping member (232) is provided with a clamping buckle hole (2321) for accommodating the first clamping buckle (2311) and a third clamping protrusion (2322) for clamping in the limiting mechanism (5); the first connecting rod (231) and the third clamping member (232) are provided with a spring so that the third clamping member (232) can be extended toward the first connecting rod (231).

7. The multi-mode seat belt selection control mechanism according to claim 5, characterized in that The support mechanism (1) comprises a first support member (11) for connecting and supporting a shoulder belt portion of a seat belt, the first support member (11) being provided with a rotating cylinder (111), the first support member (11) being capable of rotating about the axis of the rotating cylinder (111), the first support member (11) being connected with a limiting block (12) for limiting the rotation of the first support member (11), the limiting block (12) being provided with a cylindrical groove (121) for accommodating the rotating cylinder (111) and a first limiting hole (122) for limiting the movement of a first protrusion (221).

8. The selection control mechanism of a multi-mode seat belt according to claim 4, characterized in that The locking switch (3) comprises a pressing portion (31) for a user to press, and an abutting portion (32) for abutting against the locking mechanism (2) to move the locking mechanism (2) after the user presses the pressing portion, wherein the pressing portion (31) is provided with a pressing surface (311) for a user to press, and the abutting portion (32) is provided with a second inclined surface (321) for cooperating with the first inclined surface (211).

9. The multi-mode seat belt selection control mechanism according to claim 6, characterized in that The limiting mechanism (5) comprises a first slide groove (51) for sliding the third clamping protrusion (2322) when the headrest slides at a low height position, and a second slide groove (52) for sliding the third clamping protrusion (2322) when the headrest slides at a high height position, a conversion part (53) is provided between the first slide groove (51) and the second slide groove (52) so that the headrest height can be converted between a low headrest height position and a high headrest height position, the conversion part (53) comprises a first conversion member (531) and a second conversion member (532), the first conversion member (531) is a first triangular protrusion, the second conversion member (532) is a second triangular protrusion, the first triangular protrusion and the second triangular protrusion are invertedly arranged, and a third slide groove (55) is provided between the hypotenuses of the first triangular protrusion and the second triangular protrusion so that the first slide groove (51) and the second slide groove (52) are interconnected.

10. A multi-mode safety belt child seat, characterized in that: The invention comprises a seat back (10), wherein the seat back (10) is provided with a headrest (101) capable of adjusting the height, and a seat belt (102) for protecting a child is provided on one side of the headrest (101), and the seat back (10) is provided with a selection control mechanism (100) according to any one of claims 1 to 9, wherein the selection control mechanism (100) allows a user to adjust the height of the headrest according to the body shape of the child and select a use mode of the belt.

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