TWM481795U - Regulating switch valve of pneumatic tool - Google Patents

Description

Adjustable switching valve for pneumatic tools

The present invention relates to a partial structure of a pneumatic tool, and more particularly to an innovative structural type revealer of an adjustable switching valve of a pneumatic tool.

According to the general pneumatic tool structure design, in addition to the switch control function of the intake air, in order to achieve other functions such as loosening, locking different steering and speed adjustment, it is necessary to set the adjustment switching valve structure to respond accordingly; The type mainly refers to the structural type in which the adjustment switching valve is integrated at the position of the intake switch.

In the past, the adjustment switching valve is integrated in the conventional structure of the position of the intake switch. It is found that there are still some problems and shortcomings in the practical application experience. It is known that the outer circumference of the adjustment switching valve is usually directly pivoted to the pneumatic tool. The accommodating hole which is disposed at a height position on the front side of the handle is rotatable, and the inner end of the adjusting switching valve directly extends into the air inlet of the pneumatic tool, and the center of the adjusting switching valve is provided with an air inlet The hole is used for an intake valve stem to pass through; however, the conventional structure is adjusted because the inner end of the adjustment switching valve directly protrudes into the air inlet of the pneumatic tool, so when the air pressure is introduced into the air inlet passage, the adjustment is made. The switching valve is directly pressed by the air pressure. As a result, when the user wants to rotate the external control valve, there will be obvious tightness and hindrance, and the operation is inconvenient, affecting product quality and practicality. Sexual problems and shortcomings are really technical issues that need to be considered and improved by relevant industries.

Therefore, in view of the problems existing in the adjustment of the switching valve structure of the above-mentioned conventional pneumatic tools, how to develop an innovative structure that is more ideal and practical, and the users are looking forward to it, and the relevant industry must strive to develop breakthroughs. Goals and directions.

In view of this, the creator has been engaged in the manufacturing development and design experience of related products for many years. After the detailed design and careful evaluation of the above objectives, the creator will have a practical and practical creation.

The main purpose of this creation is to provide an adjustment switch valve for pneumatic tools. The technical problem to be solved is to make an innovative breakthrough in how to develop a more ideal and practical new pneumatic tool to adjust the switching valve structure. . The adjustment switching valve is disposed at a position of a receiving hole of the pneumatic tool with an intake valve stem, the intake valve stem includes a controlled end and an opening and closing end, and the controlled end is provided for a control group The opening and closing end extends into the air inlet of the pneumatic tool, and the opening and closing end group is provided with a stop ring.

The technical feature of the present invention is mainly that the adjustment switching valve system comprises: an adjustable rotary valve core, the center has an axial through hole for the intake valve stem to pass through, the adjustable rotary valve core and includes one side An intake air communication hole extending through the axial through hole and an exhaust passage in an annular concave shape; a fixed outer cylinder disposed in a fixed state in the receiving hole, forming a fixed outer cylinder A chamber is provided for the adjustable rotary valve core to be in a rotatable state. The top side of the fixed outer cylinder is provided with a forward rotation intake guide hole and a reverse intake air guide hole for the selection of the intake passage connection hole of the adjustable rotary valve core. The opposite side is connected, the fixed outer tube is provided with an exhaust guide hole through the top and bottom sides, and the exhaust passage of the adjustable rotary valve core is normally connected; an inner end partition is integrally formed at the inner end of the fixed outer cylinder, The inner end partition has a perforation at the center for the intake valve stem to pass through, and the inner end partition is used to separate the adjustable rotary valve core from the air inlet of the pneumatic tool, and the opening and closing end of the intake valve stem In the closed state, the perforation is closed against the inner end partition; a retaining stop unit Adjustable valve element disposed in the fixed outer cylinder revolutions corresponding to impose a limit switch is adjustable valve body; a control lever, showing the interlocking relationship between the valve body group provided on an outer end of the adjustable rotation, the control lever having a through hole for an intake valve The controlled end of the rod passes through, and the control lever is used to drive the adjustable rotary spool to rotate.

With this innovative and unique design, the creation can make the rotation state of the adjustable rotary valve core not affected by the air pressure of the intake port of the pneumatic tool, so that the user can toggle the control lever when the control lever is used. Excluding the air pressure top support resistance, the operation is more labor-saving and convenient, and the practical improvement of the quality of the pneumatic tool product is greatly improved.

A‧‧‧Adjustment switching valve

B‧‧‧ pneumatic tools

10‧‧‧Handle

11‧‧‧Intake valve stem

12‧‧‧ 容孔

13‧‧‧Controlled end

14‧‧‧ opening and closing end

15‧‧‧Controls

16‧‧‧Intake tunnel

17‧‧‧ Stop ring

20‧‧‧Adjustable spool

21‧‧‧Axial through hole

22‧‧‧Intake connection hole

23‧‧‧Exhaust passage

30‧‧‧Fixed outer cylinder

31‧‧ ‧ room

32‧‧‧ Forward intake guide hole

33‧‧‧Reverse the intake guide hole

34‧‧‧Exhaust guide hole

35‧‧‧Internal partition

36‧‧‧Perforation

37‧‧‧Snap hole

40‧‧‧Anti-detachment limit unit

41‧‧‧ annular groove

42‧‧‧Into the hole

43‧‧‧Rigid beads

50‧‧‧Control lever

51‧‧‧through hole

52‧‧‧Flexible apex

53‧‧‧Bolts

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a diagram showing an overall three-dimensional appearance of a pneumatic tool in a preferred embodiment of the present construction.

Fig. 2 is an exploded perspective view showing the structure of the preferred embodiment of the present invention.

Fig. 3 is a vertical sectional view showing the assembled state of the preferred embodiment of the present invention.

The fourth figure is a schematic diagram of the intake valve state of the intake valve stem of the creation adjustment switching valve.

Figure 5 is a transverse cross-sectional view showing the assembled state of the components of the preferred embodiment of the present invention.

Figure 6 is a schematic diagram of the state in which the control lever of the present invention is up.

Fig. 7 is a schematic view showing the alignment state of the internal holes corresponding to Fig. 6.

Figure 8 is a schematic diagram of the downward movement of the control lever of the present creation.

Fig. 9 is a schematic view showing the alignment state of the internal holes corresponding to Fig. 8.

Figure 10 is a diagram showing an embodiment in which the inner surface of the control lever and the outer end of the fixed outer cylinder are provided with elastic top beads and engaging holes.

Please refer to Figures 1, 2, 3, and 5 for a preferred embodiment of the adjustment switching valve of the present pneumatic tool. However, these embodiments are for illustrative purposes only and are not subject to this structure in patent applications. limit. The adjustment The switching valve A is disposed at a position of the receiving hole 12 of the intake valve stem 11 of the handle 10 of the pneumatic tool B. The intake valve stem 11 includes a controlled end 13 and an opening and closing end 14 . The controlled end 13 is provided for a control member 15 (which can be a trigger or a button type), and the opening and closing end 14 extends into an air inlet 16 of the pneumatic tool B, and the opening and closing end The 14 sets are provided with a stop ring 17; the adjustment switching valve A comprises: an adjustable rotary valve core 20 having an axial through hole 21 for the intake valve stem 11 to pass through, and the adjustable rotary valve core 20 includes One side of the axial through hole 21 is axially penetrated by one of the intake communication holes 22, and one of the annular inner concave type exhaust passages 23; a fixed outer cylinder 30 is fixedly disposed on the pneumatic tool B The accommodating hole 10 is provided with a receiving hole 12, and a fixed chamber 31 is formed inside the fixed outer cylinder 30 for the adjustable rotating valve core 20 to be rotatably assembled therein, and a fixed forward air inlet is provided on the top side of the fixed outer cylinder 30. The guide hole 32 and a reverse intake air guide hole 33 are selectively connected to the intake communication hole 22 provided in the adjustable rotary valve core 20, and the outer cylinder 30 is fixed and the exhaust gas is provided through the top and bottom sides. The hole 34 is normally connected to the exhaust passage 23 of the adjustable rotary spool 20; an inner end partition 35 is integrally formed at the inner end of the fixed outer cylinder 30, and the inner end partition 35 has a through hole 36 for the center. The valve stem 11 is passed through, and the inner end partition 35 is used to separate the adjustable rotary spool 20 from the intake passage 16 of the pneumatic tool B, and the opening and closing end 14 of the intake valve stem 11 is closed. Abutting against the through hole 36 provided in the inner end partition plate 35; a retaining stop unit 40 is disposed at the corresponding position of the adjustable rotary valve core 20 and the fixed outer cylinder 30, thereby limiting the adjustable rotary valve core 20 to prevent The outer end of the fixed outer cylinder 30 is disengaged; a control lever 50 is disposed in an interlocking relationship at an outer end of the adjustable rotary valve core 20, and the control lever 50 has a through hole 51 for the intake valve stem 11 The controlled end 13 passes through, and the control lever 50 is used to drive the adjustable rotary spool 20 to rotate.

With the above structural composition design, the use of the adjustment switching valve A of the pneumatic tool B disclosed in the present invention is first shown in FIG. 3, when the control member 15 of the controlled end 13 of the intake valve stem 11 is not provided. When the pressure is applied, the opening and closing end 14 of the intake valve stem 11 is in a closed state against the air passage closed by the through hole 36 provided in the inner end partition plate 35, and the airtight state is achieved by the check ring 17. Because the inner end partition 35 can separate the adjustable rotary spool 20 from the intake passage 16 of the pneumatic tool B, the rotation state of the adjustable rotary spool 20 is not affected by the air inlet 16 of the pneumatic tool B ( As shown in Fig. 4, when the control member 15 of the controlled end 13 of the intake valve stem 11 is buckled (as indicated by the arrow L2), as shown in Fig. 4 The opening and closing end 14 of the intake valve stem 11 is displaced rearwardly away from the through hole 36 provided in the inner end partition plate 35 to form a gas passage open state, so that the air pressure in the intake passage 16 can be made by the inner end partition plate 35. The through hole 36 is introduced into the axial through hole 21 of the adjustable rotary valve core 20 and the intake communication hole 22 (as indicated by an arrow L3); as for the positive reverse switching function of the artificially adjusted switching valve A, The rotation angle of the adjustable rotary spool 20 is changed. As shown in FIG. 6, when the control lever 50 is pushed upward (as indicated by an arrow L4), the axial direction of the adjustable rotary spool 20 is penetrated. The hole 21 will be opposite to the forward intake air guide hole 32 provided on the top side of the fixed outer cylinder 30 (as shown in Fig. 7), thereby forming the forward rotation mode of the pneumatic tool B (such as the arrow L5). As shown in FIG. 8 , when the user pushes the control lever 50 downward (as indicated by an arrow L6), the axial through hole 21 of the adjustable rotary spool 20 and the fixed outer cylinder 30 The top side is provided with a reverse position of the intake air guiding hole 33 (as shown in FIG. 7), thereby forming a reverse mode of the pneumatic tool B (as indicated by an arrow L7); as for the positive and negative intake air guiding holes 32 The air pressure of 32 can be adjusted and controlled by the axial through hole 21 of the adjustable rotary valve core 20 and the alignment of the positive and reverse intake air guide holes 32, 33. This part can be used in the control lever. The 50 surface or its corresponding location is identified by the user for identification.

As shown in the second and third figures, the anti-detachment limiting unit 40 may include an annular groove 41 disposed at an inner end of the adjustable rotary valve core 20, and disposed adjacent to the inner end of the fixed outer cylinder 30. The plurality of the bead holes 42 and the plurality of rigid beads 43 are formed; wherein the outer portions of the rigid beads 43 are embedded in the bead holes 42, and the inner portions of the rigid beads 43 are Projecting in the annular groove 41, the 俾 constitutes the axial direction of the adjustable rotary spool 20 and is retained in its rotatable state.

As shown in FIG. 10, the inner surface of the control lever 50 can be provided with an elastic bead 52, and the outer end of the fixed outer cylinder 30 is correspondingly provided with a plurality of engaging holes 37 arranged in an arc-shaped interval for the The elastic top bead 52 is selectively snapped into position so that the toggle of the control lever 50 has a compartmentalization effect.

As shown in the second and fifth figures, the interlocking relationship between the control lever 50 and the outer end of the adjustable rotary valve core 20 can be locked by the bolt 53 to achieve the interlocking relationship.

Efficacy Description: The "Adjustable Switching Valve for Pneumatic Tools" disclosed in this creation mainly consists of the innovative and unique structure of the adjustable rotary valve core, fixed outer cylinder, inner end partition, anti-detachment limit unit and control lever. The type and the technical features make the present invention in comparison with the conventional structure proposed in the prior art, since the inner end spacer is provided at the inner end of the fixed outer cylinder in the present creation to adjust the rotary valve core and the pneumatic tool The intake passages are spaced apart, and the opening and closing end of the intake valve stem is in a closed state against a perforation closed to the inner end partition, instead of abutting against the adjustable rotary spool, thereby making the adjustable rotation The rotation state of the valve core is not affected by the air pressure of the air inlet of the pneumatic tool, so the user can eliminate the air pressure top support resistance when the control lever is toggled, thereby achieving a more labor-saving and convenient operation and greatly improving the quality of the pneumatic tool product. Progressive.

The disclosures of the above embodiments are used to specifically explain the present creation, and although the descriptions are made through specific terms, the scope of patents of the novel creation cannot be limited thereby; those skilled in the art can understand the spirit of the creation. Changes and modifications are made to the equivalent purpose, and such changes and modifications are to be included in the scope defined by the scope of the patent application as described later.

A‧‧‧Adjustment switching valve

10‧‧‧Handle

11‧‧‧Intake valve stem

12‧‧‧ 容孔

13‧‧‧Controlled end

14‧‧‧ opening and closing end

15‧‧‧Controls

17‧‧‧ Stop ring

20‧‧‧Adjustable spool

21‧‧‧Axial through hole

22‧‧‧Intake connection hole

23‧‧‧Exhaust passage

30‧‧‧Fixed outer cylinder

31‧‧ ‧ room

32‧‧‧ Forward intake guide hole

33‧‧‧Reverse the intake guide hole

34‧‧‧Exhaust guide hole

35‧‧‧Internal partition

40‧‧‧Anti-detachment limit unit

41‧‧‧ annular groove

42‧‧‧Into the hole

43‧‧‧Rigid beads

50‧‧‧Control lever

51‧‧‧through hole

53‧‧‧Bolts

Claims (4)

An adjustment switching valve for a pneumatic tool, wherein the adjustment switching valve is disposed at a position of a receiving hole of an intake valve stem of a pneumatic tool, the intake valve stem includes a controlled end and a opening and closing function The controlled end is configured to be assembled by a control member, and the opening and closing end extends into an intake passage of one of the pneumatic tools, and the opening and closing end group is provided with a stop ring; the adjustment switching valve includes: An adjustable rotary valve core has an axial through hole for the intake valve stem to pass through, the adjustable rotary valve core includes an intake communication hole disposed on one side of the radial through axial through hole, and One of the annular recessed type exhaust passages; a fixed outer cylinder is fixedly disposed in the receiving hole provided in the grip of the pneumatic tool, and a fixed chamber is formed inside the fixed outer cylinder for the adjustable rotary spool The rotating outer state is set, the top side of the fixed outer cylinder is provided with a forward rotating air guiding hole and a reverse inner air guiding hole for selectively connecting the inlet communicating holes of the adjustable rotating valve core, and the outer tube is fixed and Exhaust passage through the top and bottom sides and the exhaust passage of the adjustable rotary spool An inner end partition is integrally formed at an inner end of the fixed outer cylinder, and the inner end partition has a perforation at the center for the intake valve stem to pass through, and the inner end partition is used to adjust the rotary spool The air inlet of the pneumatic tool is spaced apart, and the opening and closing end of the intake valve stem is closed to the perforation closed by the inner end partition; An anti-off-stop unit is disposed at the corresponding position of the adjustable rotary valve core and the fixed outer cylinder, so as to limit the adjustable rotary valve core to prevent the outer end of the fixed outer cylinder from coming out; a control lever is arranged in a linkage relationship At the outer end of the adjustable rotary valve spool, the control lever has a through hole for the controlled end of the intake valve stem to pass through, and the control lever is used to drive the adjustable rotary spool to rotate; thereby making the adjustable rotation The rotation state of the spool is not affected by the air pressure of the intake port of the pneumatic tool. The adjustment switch valve of the pneumatic tool of claim 1, wherein the anti-detachment limiting unit comprises an annular groove disposed near the inner end of the adjustable rotary valve core, and disposed adjacent to the inner end of the fixed outer cylinder a plurality of in-holes and a plurality of rigid beads; wherein an outer portion of each of the rigid beads is embedded in the bead hole, and an inner portion of each of the rigid beads protrudes from the ring In the groove, the 俾 constitutes the adjustable rotary spool and the axial direction is limited and retains its rotatable state. The adjusting switch valve of the pneumatic tool according to claim 2, wherein the inner surface of the control lever is provided with an elastic bead, and the outer end of the fixed outer cylinder is correspondingly provided with a plurality of engaging holes arranged in an arc-shaped interval. The elastic bead is selectively snapped into position so that the toggle of the control lever has a compartmentalization effect. The adjustment switch valve of the pneumatic tool according to claim 3, wherein the control lever and the outer end of the adjustable rotary spool are interlocked by a bolt lock to form a linkage relationship.