Suspension module and backpack with vibration damping effect

Abstract

The suspension module has a vibration-absorbing effect and comprises a housing (100), a telescopic handle (200), a first elastic part (310), and a second elastic part (320). The housing (100) has an opening at its top and one or more guide grooves (130). The telescopic handle (200) passes through the opening and is slidably connected to the guide grooves (130). The telescopic handle (200) has a cavity, and a movable rod (25) is inserted into the cavity. The movable rod (250) has one end passing through the cavity and is movable up and down, and the movable rod (250) is provided with a pin shaft (252) which can limit the movement distance of the movable rod (250), the first elastic part (310) has an upper end connected to the telescopic handle (200) and a lower end connected to the housing (100), and the second elastic part (320) has an upper end connected to the movable rod (202) and a lower end connected to the housing (252). The suspension module with vibration buffering effect can fulfill the role of vibration buffering under different load conditions by using the first elastic part (310) and the second elastic part (320), and has a wide load threshold range, a small occupying space, and a wide range of applications.

Description

[Technical Field]

[0001] The present disclosure relates to the technical field of vibration dampers, and more particularly to a suspension module and a backpack with vibration damping effect. [Background technology]

[0002] Backpacks are commonly used in people's daily lives. When walking, a backpack swings up and down with the body, generating downward impact forces up to three times the backpack's own weight. Long-term walking can repeatedly exert significant pressure on the shoulders and neck. Currently, three types of backpacks are available on the market that can cushion the impact forces generated by backpacks while walking and reduce the pressure they exert on the shoulders and neck. The first type uses elastic shoulder straps for cushioning, the second type uses an external mechanical sliding mechanism, and the third type uses an internal one-way spring mechanism. However, the shoulder straps of the first type, which use elastic straps, cannot withstand high loads, and the elastic straps have low elasticity, resulting in limited cushioning effect and a limited life cycle. The second type, which uses an external mechanical sliding mechanism, is complex, expensive, and takes up a large amount of space. The third type, the built-in one-way spring structure, is a relatively optimal solution. However, the spring used in this structure, whether it is one or two, tension or compression, functions throughout the entire carrying process. The spring only functions within its effective range of expansion and contraction. The biggest problem with this type of solution is that it has a low threshold for buffer load, achieving good suspension buffering effect only at 4 to 6 kg. It does not work when the load is too low, such as with children's bags, or too high, such as with outdoor backpacks or backpacks for photography equipment. Summary of the Invention

[0003] The technical problem to be solved by the present disclosure is to propose a suspension module and a backpack having a vibration-absorbing effect in consideration of the shortcomings of the prior art described above.

[0004] The technical solution adopted by the present disclosure to solve the technical problems is to propose a suspension module with vibration buffering effect, the suspension module comprising: a housing, a telescopic handle, a first elastic component, and a second elastic component; The housing has an opening at the top and one or more guide grooves, the telescopic handle is slidably connected to the guide groove through the opening, the telescopic handle is provided with a cavity, a movable rod is provided in the cavity, one end of the movable rod passes through the cavity and can move up and down, the movable rod is provided with a pin shaft, and the pin shaft can limit the moving distance of the movable rod; The first elastic component has an upper end connected to the telescopic handle and a lower end connected to the housing, The second elastic component has an upper end connected to the movable rod and a lower end connected to the housing.

[0005] In some embodiments, the first and second resilient components are tension springs, the first resilient component comprising two tension springs, and the second resilient component comprising one tension spring.

[0006] In some embodiments, the housing comprises a front housing and a rear housing; A plurality of positioning holes are provided in the rear housing, A plurality of positioning pins are provided on the inside of the front housing, and the positioning pins are inserted into the positioning holes to be connected.

[0007] In some embodiments, the telescoping handle comprises a link, a hook, and a guide post; the hook is disposed below the connecting portion and is adapted to connect with an upper end of the first elastic component; The guide posts are disposed on both sides of the connecting portion and connected to the guide grooves, The connecting portion, the hook and the guide post are integrally formed.

[0008] In some embodiments, a limiting block is provided at one end of the guide post away from the connecting portion, and a limiting surface is provided above the guide groove, and the limiting block is blocked by the limiting surface when it moves above the guide groove.

[0009] In some embodiments, the guide groove includes a sliding groove and an arc-shaped groove; the slide groove is disposed inside the rear housing and slidably connected to the guide post; The arc-shaped groove is disposed inside the front housing and outside the guide post, allowing the guide post to move along a fixed direction.

[0010] In some embodiments, the positioning pin is provided with a hook groove, and the hook groove is for fixing the lower ends of the first elastic component and the second elastic component.

[0011] In some embodiments, the housing is provided with a recess, which can reduce friction and noise generated when the first elastic component and the second elastic component are stretched.

[0012] In some embodiments, the front housing is provided with markings, the markings being for displaying the load value in real time.

[0013] In some embodiments, the front housing is partially or fully transparent to facilitate viewing the real-time position of the guide post.

[0014] In some embodiments, the rear housing further comprises threading holes arranged around the periphery of the rear housing to allow the vibration-damping suspension module to be embedded and connected to other components.

[0015] In some embodiments, the front housing is made of a hard plastic material and the rear housing is made of a soft plastic material.

[0016] The present disclosure further provides a backpack equipped with a suspension module having the above-described vibration-absorbing effect.

[0017] The suspension module with vibration buffering effect disclosed herein can perform vibration buffering under different load conditions by combining a first elastic component and a second elastic component, has a large load threshold range, occupies a small space, and has a wide range of applications. [Brief explanation of the drawings]

[0018] The present disclosure will now be further described with reference to the accompanying drawings and embodiments.

[0019] [Figure 1] 1 is a plan view of a suspension module having a vibration damping effect according to the present disclosure; [Figure 2] 2 is a schematic diagram of the three-dimensional structure of the front housing of the suspension module having a vibration-absorbing effect shown in FIG. 1. [Figure 3] 2 is a schematic diagram of the three-dimensional structure of the rear housing of the suspension module having a vibration-absorbing effect shown in FIG. 1. [Figure 4] 2 is a schematic diagram of the three-dimensional structure of the telescopic handle of the suspension module having a vibration-absorbing effect shown in FIG. 1. FIG. [Figure 5] 1 is a front view of a suspension module having a vibration damping effect according to the present disclosure; FIG. [Figure 6] 6 is a cross-sectional view of the housing shown in FIG. 5 taken along the line AA. [Figure 7] 6 is a cross-sectional view of the suspension module having a vibration-absorbing effect shown in FIG. 5 taken along the line BB. [Figure 8] 1 is a schematic diagram of an initial state of a suspension module having a vibration-absorbing effect according to the present disclosure; [Figure 9] 1 is a schematic diagram of a first stage extension of a suspension module having a vibration damping effect according to the present disclosure. FIG. [Figure 10]1 is a schematic diagram of a second stage extension of a suspension module having a vibration damping effect according to the present disclosure. FIG. [Figure 11] 6 is a schematic diagram of a mark of the suspension module having a vibration-absorbing effect shown in FIG. 5. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, the technical solutions in the embodiments of the present disclosure will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, and are not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present disclosure.

[0021] To solve the problem of the low load threshold of existing vibration-absorbing backpacks, the present disclosure provides a suspension module with vibration-absorbing effect, which has a wide threshold range, a small footprint, and a wide range of applications.

[0022] As shown in FIGS. 1 to 7 , the suspension module includes a housing 100, a telescopic handle 200, a first elastic component 310, and a second elastic component 320. The housing 100 has an opening at its top and two guide grooves. The telescopic handle 200 passes through the opening and is slidably connected to the guide groove 130. The telescopic handle 200 can move up and down along the guide groove 130. A cavity is provided in the telescopic handle 200, and a movable groove 240 is provided in the cavity. A movable rod 250 is provided in the cavity. One end of the movable rod 250 passes through the cavity and can move up and down. A pin shaft 252 is provided on the movable rod 250, which can limit the movement of the movable rod 250 within the movable groove 240. The first elastic component 310 has an upper end connected to the telescopic handle 200 and a lower end connected to the housing 100. The second elastic component 320 has an upper end connected to the movable rod 250 and a lower end connected to the housing 100 .

[0023] 4, a pin shaft 252 is provided at the upper end of the movable rod 250. When the movable rod 250 moves upward to the upper end of the movable groove 240, the pin shaft 252 restricts further movement of the movable rod 250. When the movable rod 250 moves downward to the lower end of the movable groove 240, the pin shaft 252 restricts further downward movement of the movable rod 250, i.e., the movement distance of the movable rod 250 is equal to the length of the movable groove 240. A connecting hole 251 is provided at the lower end of the movable rod 250, and the movable rod 250 is connected to the second elastic element 320 through the connecting hole 251. The first elastic element 310 and the second elastic element 320 together constitute the elastic element 300 of the suspension module, and the elastic element 300 is extended when the telescopic handle 200 moves upward.

[0024] Specifically, as shown in FIG. 8 , when the telescopic handle 200 is not being pulled, the elastic element 300 is in its initial state, i.e., the first elastic element 310 and the second elastic element 320 are not stretched. In the first stage, the telescopic handle 200 is pulled upward, stretching the first elastic element 310. At the same time, the movable slot 240 moves upward along with the telescopic handle 200. The pin 252 gradually moves away from the upper end of the movable slot 240 and approaches the lower end of the movable slot 240. At this time, the movable rod 250 remains stationary relative to the backpack body, and the second elastic element 320 is not stretched. At this time, the suspension module reaches the initial load threshold. When the telescopic handle 200 is pulled a certain distance, the pin 252 of the movable rod 250 reaches the lower end of the movable slot 240, as shown in FIG. 9 . At this time, the first elastic element 310 is stretched, and the second elastic element 320 is in its initial state, and the suspension module reaches its first load threshold. In the second stage, as shown in Fig. 10, the telescopic handle 200 continues to be pulled upward, the first elastic element 310 continues to stretch, and the movable rod 250, restricted by the pin shaft 252, moves upward together with the telescopic handle 200. At this time, the second elastic element 320 is stretched. When the telescopic handle 200 can no longer be pulled, the suspension module reaches its second load threshold, i.e., its maximum load threshold.

[0025] Taking a backpack as an example, the housing of the suspension module is fixedly connected to the backpack body, and the telescopic handle of the suspension module is connected to the backpack strap. The suspension module uses the vibration-absorbing effect of the elastic module to reduce the impact force generated on the backpack while walking, thereby reducing the pressure on the backpack. Existing technology is used to connect the suspension module to the backpack.

[0026] For example, the first load threshold is 6 kg and the second load threshold is 12 kg.

[0027] In the prior art, a suspension module uses one or more sets of elastic components, all of which use the same connection method. For backpacks weighing 10 kg or more, if the suspension module uses elastic components with a threshold range of 2 to 6 kg, at least two sets of such elastic components are required. In this case, the initial load threshold of the suspension module is at least 4 kg, making the suspension module unsuitable for backpacks weighing 2 to 4 kg. If the suspension module only uses elastic components with a threshold range of 6 to 12 kg, only one set of such elastic components is required, but for backpacks weighing less than 6 kg, the suspension module cannot provide vibration damping. Alternatively, if a single elastic component with a threshold range of 2 to 12 kg is used, the initial and extended lengths of the elastic components increase, occupying more space and increasing the amplitude of the elastic components, thereby affecting the vibration damping effect.

[0028] The suspension module of the present disclosure requires only one set of first elastic elements 310 with a threshold load range of 2 to 6 kg and one set of second elastic elements 320 with a threshold load range of 6 kg or more, and can achieve a vibration damping effect with a threshold load range of 2 to 12 kg. In one embodiment, when the backpack load reaches an initial load threshold, the first elastic elements 310 are activated, but when the backpack load reaches a second load threshold, the first elastic elements 310 and the second elastic elements 320 are activated simultaneously. Under the condition of achieving the same range of threshold loads, the suspension module of the present disclosure requires fewer elastic elements, which reduces the weight of the suspension module itself, while also shortening the required extension length, occupying less space, and providing a wider range of applications.

[0029] It is understood that in other embodiments, the first elastic element 310 and the second elastic element 320 may use elastic components with different threshold ranges to suit backpacks that meet higher load threshold demands according to actual needs.

[0030] Furthermore, the elastic element 300 includes, but is not limited to, a tension spring, and may also be a compression spring, or a combination of a tension spring and a compression spring.

[0031] It can be understood that in a different embodiment, the initial load threshold can be reduced or the maximum load threshold can be increased by using a combination of springs with different spring constants for the first elastic component 310 and the second elastic component 320. Meanwhile, in this embodiment, the first elastic component 310 includes two tension springs with the same spring constant, and the second elastic component 320 includes one tension spring, and the spring constants of the first elastic component 310 and the second elastic component 320 are not necessarily the same.

[0032] Furthermore, the housing 100 includes a front housing 110 and a rear housing 120, where a plurality of positioning holes 121 are provided in the rear housing 120 and a plurality of positioning pins 111 are provided inside the front housing 110, and the front housing 110 is fixedly connected to the rear housing 120 by inserting the positioning pins 111 into the positioning holes 121. The front housing 110 and the rear housing 120 are combined to form the housing 100 with an open top, and an attachment cavity is formed between the front housing 110 and the rear housing 120. The telescopic handle 200 is placed in the attachment cavity through this opening.

[0033] Furthermore, some of the positioning pins 111 are provided with recessed hook grooves 1111, which are used to secure the lower ends of the first elastic component 310 and the second elastic component 320. It can be seen that the first elastic component 310 connected to the hook 220 and the hook groove 1111 and the second elastic component 320 connected to the movable rod 250 and the hook groove 1111 are on the same plane and parallel to each other. In addition, the first elastic component 310 and the second elastic component 320 are also parallel to the guide post 230.

[0034] Furthermore, as shown in the figure, the telescopic handle 200 has an axisymmetric structure, and a connecting portion 210 is provided at its upper end. A cavity is provided at the center of the lower end of the connecting portion 210, and a movable rod 250 is provided in this cavity, with movable grooves 240 provided facing each other at the front and rear of the cavity. The movable rod 250 has connecting holes 251 at its upper and lower ends. A pin shaft 252 that crosses the movable groove 240 is provided in the connecting hole 251 at the upper end, and limits the movement of the movable rod 250 within the movable groove 240. The connecting hole 251 at the lower end is used for connecting to the second elastic component 320. Hooks 220 are provided on the left and right sides of the cavity at the lower end of the connecting portion 210. The hooks 220 are for connecting to the upper end of the first elastic component 310. One guide post 230 is provided on each side of the connecting portion 210, and the telescopic handle 200 is slidably connected to the guide groove 130 of the housing 100 via the guide posts 230.

[0035] Preferably, in this embodiment, the coupling portion 210, the hook 220, the cavity, and the guide post 230 are integrally formed. It is understood that in some embodiments, the hook 220, the cavity, and the guide post 230 can be fixedly connected to the coupling portion 210 by a connecting member.

[0036] The housing 100 also includes limiting grooves. The limiting grooves include a first limiting groove 114 provided in the front housing 110 and a second limiting groove 124 provided in the rear housing 120. The positions of the first limiting groove 114 and the second limiting groove 124 correspond to the upper ends of the movable groove 240. When the pin shaft 252 is located at the uppermost end of the movable groove 240, the suspension module is in its initial state, and the first elastic component 310 and the second elastic component 320 are in their original states, neither stretched nor compressed. Both ends of the pin shaft 252 are suspended from the first limiting groove 114 and the second limiting groove 124, preventing the movable rod 250 from naturally falling due to gravity and compressing the second elastic component 320.

[0037] Furthermore, a limiting block 231 is provided at the lower end of the guide pillar 230 located at the connecting portion 210, i.e., at one end remote from the connecting portion 210. A limiting surface 131 is provided above the guide groove 130. When the limiting block 231 moves to above the guide groove 130, it is blocked by the limiting surface 131, preventing the telescopic handle 200 from being pulled out of the housing 100.

[0038] 10, when the telescopic handle is extended a certain distance, the limiting block 231 is blocked by the limiting surface 131, and the telescopic handle 200 cannot move upward any further. At this time, the second elastic element 320 reaches its maximum state, and the suspension module reaches the maximum load threshold, i.e., the second load threshold.

[0039] The guide groove 130 further includes a sliding groove 122 on the inner side of the rear housing 120 and an arc-shaped groove 112 on the inner side of the front housing 110. The sliding groove 122 is slidably connected to the guide post 230, and the arc-shaped groove 112 is located on the outer side of the guide post 230, allowing the guide post 230 to move in a specific direction. A limiting surface 131 is provided at the upper end of the sliding groove 122. When the guide post 230 moves along the sliding groove 122 to the limiting surface 131, it cannot move any further. At this time, the second elastic element 320 is fully extended and reaches the first load threshold of the suspension module. The guide groove 130 not only limits the movement direction of the guide post 230, but also balances the telescopic handle 200 from side to side during the pulling process, preventing the elastic element 300 from swaying sideways, reducing friction between the elastic element 300 and the housing 100, and preventing noise generation.

[0040] Furthermore, the bottom surface of the lower end of the arc-shaped groove 112 can limit the downward movement of the guide post 230 .

[0041] Furthermore, in some embodiments, the suspension module may include one or more guide grooves and one or more corresponding guide posts, which can make the structure of the suspension module more stable and prevent the elastic element 300 from shifting laterally, thereby avoiding friction and noise of the elastic element.

[0042] Furthermore, the housing 100 is provided with an escape groove 140 formed by the first groove 113 in the front housing 110 and the second groove 123 in the rear housing 120. The space formed by the escape groove 140 is for disposing the first elastic element 310 and the second elastic element 320. The escape groove 140 further reduces friction between the elastic element 300 and the housing 100 when the elastic element 300 is stretched, thereby avoiding noise generation and providing a better user experience.

[0043] Furthermore, in some embodiments, marks are provided on both the left and right sides of the front housing 100 to display the load value in real time. The marks indicate the load value of the suspension module when the guide post 230 is in different positions. The user can obtain real-time load information according to the position of the corresponding mark on the limit block 231 at the bottom of the guide post 230.

[0044] Specifically, as shown in Figure 11, a floating buoy is installed at the bottom of the guide pole 230, and the part of the front housing 110 facing the buoy is the weight value of the mark 115, with weight scale indicators on both sides of the weight value. The buoy and the guide pole 230 move synchronously. As the guide pole 230 moves upward, the buoy also moves upward, indicating different weight values, i.e., the load status of the backpack. Preferably, the buoy is made of fluorescent material, allowing the user to observe the load status of the backpack even in dark environments.

[0045] Furthermore, the number of marks 115 provided is not limited to one set. Specifically, the number of marks 115 may be the same as the number of guide posts 230, or may be less than the number of guide posts 230.

[0046] Additionally, in some embodiments, the front housing is partially or fully transparent to facilitate viewing the real-time position of the buoy.

[0047] Additionally, in some embodiments, rear housing 120 also includes stitching holes 125 located in the skirt of rear housing 120, which has a height difference from the top edge of rear housing 120, thereby flush-connecting the suspension module to the backpack body.

[0048] Furthermore, in some embodiments, a hard plastic material is used for the front housing 110 and a soft plastic material is used for the rear housing 120. In this embodiment, the notch in the arc-shaped groove 112 of the front housing 110 can accommodate only the width of the limiting block 231. The telescopic handle 200 is positioned within the arc-shaped groove 112. The telescopic handle 200 can be pulled up and down within the arc-shaped groove 112 without being subjected to force from the sliding groove 122 of the rear housing 120. Therefore, using a soft plastic material for the rear housing 120 does not affect the overall extension of the telescopic handle 200. In this case, the combination of hard and soft plastic materials maintains the strength of the entire suspension module while facilitating sewing of the skirt of the rear housing and the backpack body, eliminating the need for sewing holes. At the same time, the outer surfaces of the housing and the backpack body are flat and free of protrusions, providing a better user experience.

[0049] The suspension module with vibration buffering effect according to the present disclosure can perform vibration buffering under different load conditions by combining the first elastic component 310 and the second elastic component, has a wide range of load threshold, occupies a small space, and has a wide range of applications.

[0050] The present disclosure further provides a backpack including a suspension module having a vibration damping effect as disclosed in the embodiments of the present disclosure.

[0051] The present disclosure further provides a shoulder bag including a suspension module having a vibration-absorbing effect disclosed in an embodiment of the present disclosure.

[0052] The present disclosure further provides a suitcase including a suspension module with a vibration-absorbing effect disclosed in an embodiment of the present disclosure.

[0053] The above embodiments are intended to explain the technical ideas and features of the present disclosure, and the purpose is to enable those skilled in the art to understand and implement the contents of the present disclosure, but not to limit the scope of protection of the present disclosure. All equivalent changes and modifications made within the scope of the claims of the present disclosure should be included in the scope of the claims of the present disclosure.

[0054] Those skilled in the art may make improvements and modifications based on the above description, and it should be understood that all such improvements and modifications fall within the scope of protection of the claims appended to this disclosure. [Explanation of symbols]

[0055] 100 cabinets 110 Front housing 111 Locating pin 1111 Hanging groove 112 Arc groove 113 1st groove 114 First Restriction Groove 115 marks 120 rear housing 121 Positioning hole 122 sliding groove 123 2nd groove 130 Guide groove 131 Restricted Surface 124 Second Restriction Groove 125 Sewing holes 140 Undercut 200 Telescopic Handle 210 Connection section 220 Hook 230 Guide Pillar 231 Restricted Block 240 Movable groove 250 Movable Rod 251 Connection hole 252 pin shaft 300 Elastic Parts 310 First elastic part 320 Second elastic part.

Claims

1. A suspension module having a vibration-absorbing effect, comprising: a housing, a telescopic handle, a first elastic component, and a second elastic component; The housing has an opening at an upper portion and one or more guide grooves, the telescopic handle is slidably connected to the guide groove through the opening, the telescopic handle is provided with a cavity, a movable rod is provided in the cavity, one end of the movable rod passes through the cavity and can move up and down, the movable rod is provided with a pin shaft, and the pin shaft can limit the moving distance of the movable rod; The first elastic component has an upper end connected to the telescopic handle and a lower end connected to the housing, A suspension module having a vibration-absorbing effect, characterized in that the second elastic part has an upper end connected to the movable rod and a lower end connected to the housing.

2. 2. The suspension module with vibration-absorbing effect according to claim 1, wherein the first elastic component and the second elastic component are tension springs, the first elastic component has two tension springs, and the second elastic component has one tension spring.

3. the housing comprises a front housing and a rear housing; A plurality of positioning holes are provided in the rear housing, 2. The suspension module with vibration-absorbing effect according to claim 1, wherein a plurality of positioning pins are provided on the inside of said front housing, and said positioning pins are inserted into said positioning holes to be connected.

4. The telescopic handle includes a connecting portion, a hook, and a guide post; the hook is disposed below the connecting portion and is adapted to connect with an upper end of the first elastic component; The guide posts are disposed on both sides of the connecting portion and connected to the guide grooves, 4. The suspension module with vibration-absorbing effect according to claim 3, wherein the connecting portion, the hook and the guide post are integrally formed.

5. 5. A suspension module with vibration-absorbing effect as described in claim 4, characterized in that a limiting block is provided at one end of the guide post away from the connecting portion, a limiting surface is provided above the guide groove, and the limiting block is blocked by the limiting surface when it moves above the guide groove.

6. The guide groove includes a sliding groove and an arc-shaped groove; the slide groove is disposed inside the rear housing and slidably connected to the guide post; 5. The suspension module with vibration-absorbing effect according to claim 4, wherein the arc-shaped groove is disposed inside the front housing and outside the guide post, so that the guide post moves along a fixed direction.

7. 4. The suspension module with vibration-absorbing effect according to claim 3, wherein the positioning pin has a hook groove for fixing the lower ends of the first elastic component and the second elastic component.

8. 4. The suspension module with vibration-absorbing effect according to claim 3, wherein the housing is provided with an escape groove, and the escape groove can reduce friction and noise generated when the first elastic component and the second elastic component are stretched.

9. 4. The suspension module with vibration-absorbing effect according to claim 3, wherein the front housing is provided with a mark, and the mark is for displaying a load value in real time.

10. 4. The suspension module with vibration-absorbing effect according to claim 3, wherein the front housing is partially or completely transparent to facilitate viewing of the real-time position of the guide column.

11. 4. The suspension module with vibration-absorbing effect according to claim 3, further comprising sewing holes arranged around the periphery of the rear housing so as to connect the suspension module with vibration-absorbing effect to the backpack body in an embedded manner.

12. 4. The suspension module having a vibration-absorbing effect according to claim 3, wherein the front housing is made of a hard plastic material and the rear housing is made of a soft plastic material.

13. A backpack, comprising a suspension module having a vibration damping effect according to any one of claims 1 to 12.

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