Silencer

Abstract

The utility model belongs to the field of silencers, and particularly relates to a silencer for garden machinery. The small cover is provided with an inclined exhaust mounting hole, one end of the exhaust pipe is inserted and riveted in the exhaust mounting hole, the air outlet pipe reinforcing piece comprises a supporting plate parallel to the exhaust mounting hole, the supporting plate is provided with a supporting hole for the exhaust pipe to penetrate through, and the supporting hole is provided with an air inlet and an air outlet. The two ends of the supporting plate extend to be provided with transition plates respectively, one transition plate extends to be provided with a first connecting plate, the other transition plate extends to be provided with a second connecting plate, the first connecting plate is fixedly connected to the middle of the small cover in a tightly attached mode, and the second connecting plate is fixedly connected to the inner wall of the side edge of the small cover in a tightly attached mode. According to the utility model, the shaking of the exhaust pipe during working is reduced, the generation of extra noise is reduced, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of muffler, in particular to a muffler for garden machinery. BACKGROUND

[0002] The muffler is used for muffling the exhaust of the engine of the garden machinery, with the change of the design of the garden machinery mechanism, the structure design of the muffler is more and more difficult, in order to meet the design requirement of the customer, the company designs a muffler with inclined exhaust, in order to guarantee the reliability of the fixed exhaust pipe, the internal structure of the muffler is improved. SUMMARY

[0003] In view of the deficiency of prior art, the utility model discloses a kind of mufflers, and the exhaust pipe of the inclined setting is kept by the additional air pipe reinforcing piece, so that exhaust pipe can be stably connected on small cover, on the one hand, meet the requirement of product structure design, on the other hand, stable support, reduce the shaking of exhaust pipe in work, reduce the generation of additional noise, improve the quality of product.

[0004] The technical scheme of the utility model is as follows:

[0005] The muffler includes big lid and small lid, and the big lid and the small lid are connected together, and a closed muffling cavity is formed between the big lid and the small lid, the big lid is provided with an air inlet hole, and the big lid on both sides of the air inlet hole is provided with a connecting through hole, characterized in that: the small lid is provided with an inclined exhaust mounting hole, further comprising an exhaust pipe, one end of the exhaust pipe is inserted and riveted in the exhaust mounting hole, further comprising an air pipe reinforcing piece, the air pipe reinforcing piece comprises a support plate parallel to the exhaust mounting hole, the support plate is provided with a support hole for the exhaust pipe to pass through, and the both ends of the support plate are respectively provided with a transition plate, one transition plate is provided with a first connecting plate, and the other transition plate is provided with a second connecting plate, the first connecting plate is fixedly connected to the middle part of the small lid, and the second connecting plate is fixedly connected to the inner wall of the side of the small lid.

[0006] The small lid is provided with a support mounting hole at one end away from the exhaust mounting hole, and the two support mounting holes are on the same straight line, further comprising a support pipe, the support pipe is inserted and riveted in the support mounting hole, the other end of the support pipe abuts against the big lid, and the support pipe is provided with a connecting hole corresponding to the connecting through hole.

[0007] The support hole is formed with a reinforcing edge along the edge, and the reinforcing edge is tightly attached to the surface of the exhaust pipe.

[0008] The auxiliary fixing plate is provided with a positioning hole, the positioning hole is sleeved on the baffle, positioning blocks are respectively arranged at two ends of the auxiliary fixing plate, positioning notches are arranged on the side of the positioning blocks facing the positioning hole, the other end of the supporting pipe abuts on the surface of the auxiliary fixing plate and is located between the baffle and the positioning notches, and the auxiliary fixing plate is provided with a through hole, the through hole is connected with the connecting hole and the connecting through hole.

[0009] The lower left corner of the large cover and the small cover is provided with an extension part, and the extension part is provided with a fixed connecting hole.

[0010] In conclusion, the utility model has the advantages of the following:

[0011] The utility model discloses an improved structure of the muffler, and the exhaust pipe in the muffling cavity is kept through the exhaust reinforcing sheet, so that the exhaust pipe riveted with the small cover at one end has a second supporting point, the position of the exhaust pipe in the muffling cavity is stable and reliable, and the shaking of the exhaust pipe is reduced.The above structure can meet the needs of customers in product appearance design. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a front view schematic diagram of the utility model;

[0013] Figure 2 It is a side view schematic diagram of the utility model;

[0014] Figure 3 It is Figure 1 the section view schematic diagram of A-A of

[0015] Figure 4 It is Figure 1 the section view schematic diagram of B-B of

[0016] Figure 5 It is Figure 1 the section view schematic diagram of C-C of

[0017] Figure 6 It is a front view schematic diagram of the small cover, the supporting pipe and the exhaust pipe;

[0018] Figure 7 It is a side view schematic diagram of Figure 6

[0019] Figure 8 It is a front view schematic diagram of the large cover;

[0020] Figure 9 It is Figure 8 the section view schematic diagram of D-D in

[0021] Figure 10 is a front view of the auxiliary fixing plate;

[0022] Figure 11 is a sectional view of the E-E; Figure 10

[0023] Fig. 1 is a large cover, 10 is an air inlet hole, 11 is a connecting through hole,

[0024] 2 is a small cover, 20 is an exhaust mounting hole, 21 is an exhaust pipe, 22 is an exhaust pipe reinforcing piece, 220 is a support plate, 2201 is a support hole, 221 is a transition plate, 222 is a first connecting plate, 223 is a second connecting plate, 23 is a support mounting hole, 24 is a support pipe, 2202 is a reinforcing edge,

[0025] 13 is an auxiliary fixing plate, 100 is a blocking edge, 130 is a positioning hole, 131 is a positioning block, 1310 is a positioning notch, 132 is a through hole,

[0026] 4 is an extension part, 40 is a fixed connecting hole. DETAILED DESCRIPTION

[0027] The present application will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present application and can implement it, but the embodiments are not as a limitation on the present application.

[0028] It should be noted that when an element is referred to as "provided on", "fixed on" another element, it can be directly on another element or there can be a middle element. When an element is referred to as "fixed on" another element, or "fixedly connected" with another element, they can be detachably fixed or non-detachably fixed. When an element is referred to as "connected", "rotatably connected" with another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "left", "right", "upper", "lower", and similar expressions are only for the purpose of illustration and do not represent the only implementation.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0030] The terms "first", "second", "third", and so on, used in the present application do not represent a specific number and order, but are only used for the purpose of distinguishing names. ​

[0031] Referring to Figures 1 to 5 As shown in the figure, the muffler comprises a large cover 1 and a small cover 2, the large cover 1 and the small cover 2 are connected together to form a closed muffling cavity therebetween, the large cover 1 is provided with an air inlet hole 10, the large cover on both sides of the air inlet hole 10 is provided with a connecting through hole 11, the small cover 2 is provided with an inclined exhaust mounting hole 20, further comprising an exhaust pipe 21, one end of the exhaust pipe 21 is inserted into and riveted in the exhaust mounting hole 20, further comprising an exhaust pipe reinforcing sheet 22, the exhaust pipe reinforcing sheet 22 comprises a support plate 220 parallel to the exhaust mounting hole, the support plate 220 is provided with a support hole 2201 through which the exhaust pipe passes, both ends of the support plate 220 are respectively provided with a transition plate 221, one transition plate is provided with a first connecting plate 222, and the other transition plate is provided with a second connecting plate 223, the first connecting plate 222 is fixedly connected in close contact with the middle part of the small cover 2, and the second connecting plate 223 is fixedly connected in close contact with the inner wall of the side of the small cover 2, in combination Figure 3 The transition plate connected with the first connecting plate is arranged at an obtuse angle between the support plate, and the transition plate connected with the second connecting plate is arranged at a right angle between the support plate, and the support plate and the transition plates on both sides are all transitioned by arcs.

[0032] The utility model improves the structure of the muffler, maintains the exhaust pipe in the muffling cavity through the additionally arranged exhaust pipe reinforcing sheet, so that the exhaust pipe riveted at one end with the small cover gets a second supporting point, the position of the exhaust pipe in the muffling cavity is stable and reliable, and the shaking of the exhaust pipe is reduced; the additional noise generated by the muffler due to shaking in the use process is avoided, and the realization of the above structure makes the appearance design of the product meet the needs of customers.

[0033] Further, referring to Figures 1 to 7 As shown in the figure, the small cover 2 is provided with a support mounting hole 23 at the end away from the exhaust mounting hole, and the two support mounting holes 23 are on the same straight line, further comprising a support pipe 24, the support pipe 24 is inserted into and riveted in the support mounting hole 23, the other end of the support pipe 24 abuts against the large cover 1, and the support pipe is provided with a connecting hole corresponding to the connecting through hole, in order to improve the overall structural strength of the muffler, a support pipe is further arranged at the end away from the exhaust pipe, the support pipe connects the large cover and the small cover, improves the structural strength between the large cover and the small cover, and the support pipe is a central control pipe, and the connecting hole is arranged at the end part, so that the muffler is fixed with the garden tool.

[0034] Referring to Figure 3 As shown in the figure, the support hole 2201 is formed with a reinforcing edge 2202 along the edge, and the reinforcing edge is in close contact with the surface of the exhaust pipe, the reinforcing edge improves the structural strength of the support plate on the one hand, and on the other hand, also increases the contact area of the support hole and the exhaust pipe, so that the connection between the two is more stable and reliable.

[0035] Referring to Figure 4 、 Figures 8 to 11 As shown in the figure, the air inlet hole 10 is provided with a baffle 100 extending into the sound attenuation cavity, the auxiliary fixing plate 13 is provided with a positioning hole 130 sleeved on the baffle, positioning blocks 131 are arranged at both ends of the auxiliary fixing plate 13, the two ends of the auxiliary fixing plate are arc-shaped transitions, the positioning blocks are block bodies arranged on the edges of the arc-shaped transitions of the two ends of the auxiliary fixing plate and higher than the auxiliary fixing plate, the positioning blocks 131 are provided with positioning notches 1310 on the side facing the positioning hole, the other end of the support pipe 24 abuts against the surface of the auxiliary fixing plate and is located between the baffle and the positioning notches, the auxiliary fixing plate 13 is provided with a through hole 132, and the through hole 132 is in communication with the connecting hole and the connecting through hole 11, in the embodiment, the baffle enhances the structural strength around the air inlet hole, the auxiliary fixing plate is further arranged to improve the structural strength, the auxiliary fixing plate can position and fix the end of the support pipe, and in the subsequent connection process with the garden equipment, the existence of the auxiliary fixing plate makes the connection part of the large cover not easy to be deformed by the fastener, and the structural reliability of the product is ensured.

[0036] Referring to Figure 1 As shown in the figure, the lower left corners of the large cover 1 and the small cover 2 are provided with extension parts 4, the extension parts 4 are provided with fixed connecting holes 40, and the extension parts and the two support pipes form a triangular positioning relationship, so that the stability of the sound attenuator after installation with the garden tool is ensured.

[0037] In summary, the utility model has the following beneficial effects:

[0038] The utility model improves the structure of the sound attenuator, maintains the exhaust pipe in the sound attenuation cavity through the arranged exhaust strengthening sheet, so that the exhaust pipe riveted with the small cover at one end obtains a second supporting point, the position of the exhaust pipe in the sound attenuation cavity is stable and reliable, and the shaking of the exhaust pipe is reduced, the additional noise generated by the sound attenuator due to shaking in the use process is avoided, and the realization of the above structure makes the appearance design of the product meet the needs of customers.

[0039] Based on the described embodiments of the application, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the application.

Claims

1. A muffler, comprising a large cover and a small cover connected together to form a sealed muffler cavity, wherein the large cover has an air inlet, and the large cover on both sides of the air inlet has connecting through holes, characterized in that: The small cover is provided with an inclined exhaust installation hole, and further comprises an exhaust pipe, one end of which is inserted into and riveted in the exhaust installation hole, and an exhaust pipe reinforcing sheet, which comprises a support plate parallel to the exhaust installation hole, the support plate being provided with a support hole through which the exhaust pipe passes, and two transition plates respectively extending from two ends of the support plate, one of the transition plates being provided with a first connecting plate, and the other transition plate being provided with a second connecting plate, the first connecting plate being fixedly connected to the middle of the small cover, and the second connecting plate being fixedly connected to the inner wall of the side of the small cover.

2. The muffler of claim 1, wherein: The small cover is provided with two support installation holes at one end away from the exhaust installation hole, the two support installation holes being on the same straight line, and further comprising a support pipe, which is inserted into and riveted in the support installation hole, and abuts against the large cover at the other end of the support pipe, and is provided with a connecting hole corresponding to the connecting through hole.

3. The muffler of claim 2, wherein: Further comprising an auxiliary fixing plate, the periphery of the air inlet hole being provided with a baffle extending into the sound attenuation cavity, the auxiliary fixing plate being provided with a positioning hole, the positioning hole being sleeved on the baffle, two positioning blocks being respectively arranged at two ends of the auxiliary fixing plate, the positioning blocks being provided with positioning notches on the side facing the positioning hole, the other end of the support pipe abutting against the surface of the auxiliary fixing plate and being located between the baffle and the positioning notches, the auxiliary fixing plate being provided with a through hole, the through hole being in communication with the connecting hole and the connecting through hole.

4. The muffler of claim 1, wherein: The support hole is provided with a reinforcing edge extending along the edge, the reinforcing edge abutting against the surface of the exhaust pipe.

5. The muffler of claim 1, wherein: The lower left corner of the large cover and the small cover are both provided with an extension, the extension being provided with a fixed connecting hole.

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