Foaming gun easy to maintain
By introducing a sliding guide structure with a split connecting seat and guide sleeve into the foam gun, the problems of complicated assembly and high maintenance costs of existing foam guns are solved, and the trigger and gun body are made easy to repair and low-cost to maintain.
Patent Information
- Application Number
- CN202422496047.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-10-15
AI Technical Summary
The existing foam gun has a one-piece molded structure for the gun body and trigger, which makes assembly troublesome and maintenance costly. When the connection is damaged, the entire gun body needs to be replaced.
The connector adopts a split structure, with the trigger and the connector pivotally connected by the horizontal and vertical parts. The connector can be replaced separately, and combined with the sliding guide of the guide sleeve, it simplifies assembly and reduces maintenance costs.
This design achieves easy maintenance of the trigger and gun body, reduces maintenance costs, simplifies the assembly process, and improves the maintainability of the equipment.
Smart Images
Figure CN223530602U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of foaming device technology, specifically to an easy-to-maintain foaming gun. Background Technology
[0002] Foam guns are widely used in the decoration industry. A common structure includes a gun body, barrel, grip, push rod assembly, trigger, and connector for connecting to the foam can. The barrel is installed at the front end of the gun body. The push rod assembly generally includes a push rod, spring, and valve core. The front end of the push rod extends into the barrel and the rear end extends into the gun body cavity, and it cooperates with the trigger through a guide sleeve. The connector is formed on the top surface of the gun body and connects to the foam can. The gun is then activated by pulling the trigger.
[0003] In conventional foam guns, the gun body and grip are usually a single molded structure, with the trigger directly connected to the gun body cavity. This makes assembly relatively complicated, and when the connection between the gun body and the trigger is damaged, the entire gun body needs to be replaced, resulting in high maintenance costs in the later stages. This needs to be improved. Utility Model Content
[0004] To address at least one of the aforementioned technical deficiencies, this utility model provides the following technical solution:
[0005] This application discloses an easy-to-maintain foam gun, including a gun body, a trigger, and a matching push rod assembly. The push rod assembly includes a push rod and a guide sleeve connected to the push rod, and also includes a connecting seat. The connecting seat is disposed in the gun body cavity and has a connected horizontal part and a connected vertical part. The end of the trigger is pivotally connected to the horizontal part of the connecting seat, and the vertical part of the connecting seat is slidably connected to the guide sleeve along the axial direction of the push rod.
[0006] This design improves the connection structure between the trigger and the gun body by adding a connecting seat. The trigger is connected to the gun body via the connecting seat, which has horizontal and vertical sections. The connecting seat can be fixed to the gun body cavity wall through the horizontal or vertical sections, such as by fitting or screw fixing. The vertical section guides the sliding of the guide sleeve to improve stability. When the connecting seat is damaged, it can be replaced separately without replacing the entire gun body, which helps to reduce maintenance and usage costs.
[0007] For the sliding of the longitudinal section and the guide sleeve, common methods include guide hole guidance or groove guidance.
[0008] Furthermore, a guide hole is provided along the axial direction of the top rod at the longitudinal part of the connecting seat, and the guide sleeve extends into the guide hole and the two slide in fit, so that the guide hole guides the movement, which facilitates molding and assembly.
[0009] Furthermore, a connecting hole is provided at the bottom of the horizontal part of the connecting seat, and the end of the trigger is cylindrical. The cylindrical part of the trigger end is pivotally connected to the connecting hole. For the docking of the cylindrical part of the trigger end and the connecting hole, the cylindrical part of the trigger end can be inserted into the connecting hole from the side, or directly enter the connecting hole from the upper or lower notch.
[0010] Furthermore, the connecting seat is made of an elastic material, and a notch is provided at the bottom wall of the connecting hole for the column to enter and exit. The width of the notch is smaller than the diameter of the column. During assembly, the column at the trigger end is directly squeezed into the connecting hole through the notch. The size of the notch restricts the column from detaching, which facilitates assembly and disassembly.
[0011] Furthermore, the gun body includes a front part and a rear part. The tail end of the front part is fitted onto the head end of the rear part and fixed with fasteners. The head end of the rear part cooperates with the cavity wall of the front part to clamp and fix the connecting seat. In this solution, the gun body is changed to a split assembly structure. When assembling the gun body, the head end of the rear part cooperates with the cavity wall of the front part to clamp and fix the connecting seat, which facilitates assembly and simplifies the installation structure of the connecting seat.
[0012] Furthermore, a groove is formed in the front cavity wall of the gun body, the horizontal end of the connecting seat is embedded in the groove, the front end of the rear part of the gun body abuts against the connecting seat and cooperates with the groove wall to clamp the connecting seat, the groove and the connecting seat are connected for pre-fixation, and then the rear part of the gun body is connected with the front part to clamp and fix the connecting seat at the same time.
[0013] Furthermore, the fastener is threaded. At the junction of the front tail end and the rear head end of the gun body, the end of the fastener passes through the hole formed in the front peripheral wall and is threadedly connected to the rear head end. The threaded fastener is easy to install.
[0014] Furthermore, it also includes a grip, which is integrally formed with the rear of the gun body, and the integral formation of the rear and grip facilitates assembly.
[0015] Furthermore, the guide sleeve is threaded at the tail end of the push rod, and the threaded connection facilitates disassembly and reduces maintenance costs.
[0016] Furthermore, a connector that is integrally formed with the foaming tank is located at the top surface of the gun body. A through hole communicating with the gun body cavity is formed in the middle of the connector. A valve core assembly is provided at the through hole. The valve core assembly includes a valve body, a sleeve, a spring, and a ball. The valve body and the sleeve are fitted together and connected, with the bottom end of the sleeve outside the valve body supported by the wall of the through hole. The spring is located inside the valve body cavity. The top end of the spring abuts against the ball and the ball blocks the flow channel cavity of the valve body. The bottom end of the spring abuts against the cavity wall of the sleeve and the sleeve supports the spring. In this solution, the structure of the valve core assembly is improved by adding a sleeve. When the valve core assembly is installed to the through hole, the sleeve supports the spring, avoiding phenomena such as the ball and spring falling off or misalignment, and facilitating assembly.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] 1. This utility model improves the structure of the foam gun, such as the modification of the trigger and gun body docking structure, which allows for the replacement of the connecting seat as needed, thus helping to reduce maintenance costs. It also improves the structure of the valve core assembly, which is easier to assemble and form under the support of the sleeve and spring. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of the foam gun in Example 1;
[0021] Figure 2 This is a cross-sectional structural diagram of the foam gun in Example 1;
[0022] Figure 3 This is a schematic diagram of the connection structure of the trigger and the connecting seat in Embodiment 1;
[0023] Figure 4 This is a schematic diagram of the connection structure of the trigger, connecting seat, and guide sleeve in Embodiment 1;
[0024] Figure 5 This is an exploded structural diagram of the gun body in Example 1;
[0025] Figure 6 This is a schematic diagram of the valve core assembly in Embodiment 1;
[0026] The attached figures are labeled as follows:
[0027] 1. Gun body; 2. Grip; 3. Barrel; 4. Connector; 5. Valve core assembly; 6. Trigger; 7. Connecting seat; 8. Push rod assembly; 51. Valve body; 52. Sleeve; 53. Spring; 54. Ball; 61. Column; 71. Horizontal part; 72. Vertical part; 73. Guide hole; 74. Connecting hole; 81. Push rod; 82. Guide sleeve; 100. Front part; 101. Rear part; 102. Fastener. Detailed Implementation
[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0029] Example 1
[0030] like Figures 1-2 As shown, the easy-to-maintain foam gun in this example includes a gun body 1, a trigger 6, and a push rod assembly 8. The push rod assembly 8 includes a push rod 81 and a guide sleeve 82 connected to the push rod 81. The gun body 1 is connected to the barrel 3 at the front end. One end of the push rod 81 extends into the barrel 3 and the other end extends into the cavity of the gun body 1 and passes through the trigger 6 to connect with the guide sleeve 82 at the rear. The push rod 81 cooperates with the trigger 6 through the guide sleeve 82. Pulling the trigger backward pushes the guide sleeve backward, and simultaneously moves the push rod backward.
[0031] In this example, a connecting seat 7 is added. The connecting seat 7 is installed inside the gun body 1 cavity. The connecting seat 7 has a connected horizontal part 71 and a vertical part 72. Figure 2 In the shown configuration, the horizontal portion 71 extends along the axial direction of the gun body, and the vertical portion 72 extends longitudinally. The vertical portion 72 is integrally formed at the tail end of the horizontal portion 71, making the whole structure L-shaped. The end of the trigger 6 is pivotally connected to the horizontal portion 71 of the connecting seat 7. In the axial direction of the push rod 81, the guide sleeve 82 is slidably connected to the vertical portion 72 of the connecting seat. With this structure, the connecting seat can be replaced separately, reducing later maintenance costs.
[0032] For the pivotal connection structure between the trigger end and the transverse part of the connecting seat, such as the common pivot type, an additional pivot can be added to the trigger end, or the pivot can be integrally formed at the trigger end. For example... Figures 2-4 As shown, in this example, the trigger 6 has an integrally formed column 61 at its end. Using this column as a pivot, a connecting hole 74 is formed on the bottom surface of the horizontal part of the connecting seat 7. The column 61 is inserted into the connecting hole 74 to form a pivotal connection. For ease of assembly, the connecting seat 7 is made of a flexible material, such as plastic. A notch is formed on the bottom wall of the connecting hole 74 to allow the column 61 to enter and exit. The width of the notch is smaller than the diameter of the column. During assembly, the column at the end of the trigger is directly squeezed into the connecting hole through the notch, with the size of the notch restricting the column's detachment.
[0033] For the longitudinal sliding connection structure of the guide sleeve and the connecting seat, such as the common groove type or guide hole type, a rib is formed on the peripheral wall of the guide sleeve, and a groove is formed in the longitudinal part. The rib is placed in the groove with a clearance fit to form a sliding connection. Figure 3 , Figure 4 As shown in the example, a guide hole type is used for demonstration. For example, a guide hole 73 is formed along the axial direction of the push rod at the longitudinal part 72 of the connecting seat 7. The columnar guide sleeve 82 extends into the guide hole 73 and the two are fitted with a clearance to form a sliding connection. The tail end of the push rod 81 is fixed to the guide sleeve 82, such as by fitting or threaded connection. When the trigger is pulled backward, the trigger abuts against and pushes the guide sleeve backward, which simultaneously moves the push rod backward.
[0034] For fixing the connector within the gun body cavity, various methods can be used, such as screws, interlocking, or snap-fit fixing; the choice depends on the specific requirements. Figure 2 , Figure 5As shown, in this example, the structure of the gun body is improved for ease of assembly. The gun body 1 includes a columnar front part 100 and a rear part 101. The tail end of the front part 100 is fitted onto the head end of the rear part 101 and fixed with fasteners 102. The head end of the rear part 101 cooperates with the cavity wall of the front part 100 to clamp and fix the connecting seat 7. The gun body has a split assembly structure, and the required parts can be replaced as needed. The clamping and fixing does not require additional screws or other screws to fix the connecting seat.
[0035] To facilitate clamping the connecting seat, in this example, a groove is formed along the axial direction at the front cavity wall of the gun body 1. The first end of the horizontal part 71 of the connecting seat 7 is embedded in the groove for pre-fixation. Then the rear part can be installed. The first end of the rear part 101 abuts against the vertical part 72 of the connecting seat 7, and then the groove wall cooperates with the groove to clamp the connecting seat.
[0036] For fasteners that fix the front and rear parts, such as the common threaded type, a screw is used as the fastener 102. At the fitting point between the tail end of the front part 71 and the head end of the rear part 72 of the gun body 1, the end of the fastener 102 passes through the hole formed on the peripheral wall of the tail end of the front part and is threadedly connected to the hole on the peripheral wall of the head end of the rear part.
[0037] In addition, the handle and connector that mates with the foaming can of the foam gun are generally integrally molded with the gun body, such as... Figure 1 , Figure 2 As shown, in this example, the grip 2 is integrally formed with the rear part 101 of the gun body 1, as is common injection molding, and the connector 4 is integrally formed on the top surface of the front part 100. The middle of the connector 4 is formed with a through hole communicating with the chamber of the front part 100 of the gun body 1, and the valve core assembly 5 is installed at the through hole.
[0038] In this example, valve core assembly 5 includes valve body 51, sleeve 52, spring 53, and ball 54. The cylindrical valve body 51 is fitted and connected to the sleeve 52. Figure 6 As shown, the first end of the sleeve 52 extends into the flow channel cavity at the bottom of the valve body 51. The spring 53 is located inside the cavity of the valve body 51, with its top end abutting against the ball 54 and sealing the flow channel cavity of the valve body with the ball. The bottom end of the spring 53 extends into the cavity of the sleeve 52 and abuts against the cavity wall of the sleeve 52, with the sleeve cavity wall supporting the spring. If the bottom cavity wall of the sleeve 52 is convex, the bottom end of the spring 53 abuts against the convex cavity wall to prevent it from detaching from the bottom end of the sleeve. The bottom end of the sleeve 52 is outside the valve body 51. When assembled, the bottom end of the sleeve abuts against the convex hole wall of the valve body through hole to limit its downward movement. With this structure, the spring better supports the ball, and the presence of the sleeve during installation can reduce the phenomenon of the ball and spring falling off, facilitating assembly. The principle of the spring and ball working together to open or seal the flow channel cavity of the valve body is conventional technology in the field and will not be elaborated here.
[0039] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.
Claims
1. An easy-to-maintain foam gun, comprising a gun body (1), a trigger (6), and a matching push rod assembly (8), wherein the push rod assembly (8) comprises a push rod (81) and a guide sleeve (82) connected to the push rod, characterized in that, It also includes a connecting seat (7), which is disposed in the cavity of the gun body (1). The connecting seat (7) has a connected horizontal part (71) and a vertical part (72). The end of the trigger (6) is pivotally connected to the horizontal part (71) of the connecting seat (7), and the vertical part (72) of the connecting seat (7) is slidably connected to the guide sleeve (82) along the axial direction of the push rod (81).
2. The easy-to-maintain foam gun as described in claim 1, characterized in that: The connecting seat (7) has a guide hole (73) provided at the longitudinal part (72) along the axial direction of the top rod (81), and the guide sleeve (82) extends into the guide hole (73) and the two slide together.
3. The easy-to-maintain foam gun as described in claim 1, characterized in that: A connecting hole (74) is provided on the bottom surface of the horizontal part (71) of the connecting seat (7), and the end of the trigger (6) is cylindrical. The cylindrical part (61) at the end of the trigger (6) is pivotally connected to the connecting hole (74).
4. The easy-to-maintain foam gun as described in claim 3, characterized in that: The connecting seat (7) is made of an elastic material, and the bottom wall of the connecting hole (74) is provided with a notch for the column to enter and exit. The width of the notch is smaller than the diameter of the column.
5. The easy-to-maintain foam gun as described in any one of claims 1-4, characterized in that: The gun body (1) includes a front part (100) and a rear part (101). The tail end of the front part (100) is fitted onto the head end of the rear part (101) and fixed with a fastener (102). The head end of the rear part (101) cooperates with the cavity wall of the front part (100) to clamp and fix the connecting seat (7).
6. The easy-to-maintain foam gun as described in claim 5, characterized in that: The front part (100) of the gun body (1) has a groove formed in the cavity wall. The end of the horizontal part (71) of the connecting seat (7) is embedded in the groove. The front end of the rear part (101) of the gun body (1) abuts against the connecting seat (7) and cooperates with the groove wall to clamp the connecting seat (7).
7. The easy-to-maintain foam gun as described in claim 5, characterized in that: The fastener (102) is threaded. At the junction of the tail end of the front part (100) and the head end of the rear part (101) of the gun body (1), the end of the fastener (102) passes through the hole formed in the front peripheral wall and is threadedly connected to the head end of the rear part (101).
8. The easy-to-maintain foam gun as described in claim 1, characterized in that: It also includes a grip (2), which is integrally formed with the rear of the gun body (1).
9. The easy-to-maintain foam gun as described in claim 1, characterized in that: The guide sleeve (82) is threadedly connected to the tail end of the top rod (81).
10. The easy-to-maintain foam gun as described in claim 1, characterized in that: The gun body (1) has an integrally formed connector (4) at the top end that connects to the foaming tank. The connector (4) has a through hole in the middle that communicates with the gun body cavity. A valve core assembly (5) is provided at the through hole. The valve core assembly (5) includes a valve body (51), a sleeve (52), a spring (53), and a ball (54). The valve body (51) is fitted and connected to the sleeve (52), and the bottom end of the sleeve outside the valve body is supported by the through hole wall. The spring (53) is located inside the cavity of the valve body (51). The top end of the spring (53) abuts against the ball (54) and the ball (54) blocks the flow channel cavity of the valve body. The bottom end of the spring (53) abuts against the cavity wall of the sleeve (52) and the sleeve supports the spring.